Riordan numbers: Difference between revisions

m
correct some misinformation
m (→‎{{header|Raku}}: typos, extend stretch)
m (correct some misinformation)
Line 1:
{{draft task}}
 
Riordan numbers show up in several places in set theory. They are closely related to [[Motzkin numbers]], and may be derivedused fromto derived them.
 
Riordan numbers comprise the sequence '''a''' where:
10,327

edits