Talk:Lychrel numbers: Difference between revisions
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Alternatively, by way of illustration: 196 is Lychrel, with its sequence beginning 196+691=887... 295 is Related because 295+592=887, and 887 already belongs to 196's sequence. --[[User:Aspectcl|Aspectcl]] ([[User talk:Aspectcl|talk]]) 13:21, 31 August 2015 (UTC)
: Re-worded using your suggested seed/related idea.--[[User:Paddy3118|Paddy3118]] ([[User talk:Paddy3118|talk]]) 15:02, 31 August 2015 (UTC)
:: That reads much more clearly to me, and the example is better than mine for taking two steps. --[[User:Aspectcl|Aspectcl]] ([[User talk:Aspectcl|talk]]) 23:37, 31 August 2015 (UTC)
==simpler wording==
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:Isn't it the case that while the latter may be technically correct and less wordy, the former states more explicitly the omission of zero? I tend to want to keep the former. --[[User:Paddy3118|Paddy3118]] ([[User talk:Paddy3118|talk]]) 17:59, 31 August 2015 (UTC)
::: Zero is not positive. Both are technically correct, I didn't imply that one was incorrect, I just stated an opinion that one sentence is more simpler (and cleaner). -- [[User:Gerard Schildberger|Gerard Schildberger]] ([[User talk:Gerard Schildberger|talk]]) 22:16, 31 August 2015 (UTC)
:: Why is this even an issue? Regardless of whether or not 0 is tested, 0 is not a Lychrel number because 0+0 = 0 and 0 is a palindrome. --[[User:Rdm|Rdm]] ([[User talk:Rdm|talk]]) 18:01, 31 August 2015 (UTC)
== How can a Related number be a palindrome? ==
We're asked to list "Seeds or related numbers" that are palindromes.
How is it possible that a related number is palindromic?
Surely that would stop its seed from being a Lycrel number?
Could someone provide an e.g. and explanation (or rewrite the task objetive)?
--[[User:Tim-brown|Tim-brown]] ([[User talk:Tim-brown|talk]]) 07:59, 11 September 2015 (UTC)
: |Hi Tim, there is a version of the algorithm that does not produce palindromes, but the key is in this:
:: ''Notice that the check for a palindrome happens after an addition.''
: That example starts with the palindromic number 55 but the check comes later.
: --[[User:Paddy3118|Paddy3118]] ([[User talk:Paddy3118|talk]]) 21:03, 11 September 2015 (UTC)
: 4994 is an example of a related number which is a palindrome. There are other examples. And like Paddy said, we only reject the seed if a sum was a decimal palindrome. --[[User:Rdm|Rdm]] ([[User talk:Rdm|talk]]) 13:18, 12 September 2015 (UTC)
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