Number of partitions of {1,..,n} into any number of lists of size not equal to 2, where a list means an ordered subset, cf. A000262.
A113235
Number of partitions of {1,..,n} into any number of lists of size not equal to 2, where a list means an ordered subset, cf. A000262.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =7a(4) =49a(5) =301a(6) =2281a(7) =21211a(8) =220417a(9) =2528569a(10) =32014801a(11) =442974511a(12) =6638604721a(13) =107089487077
External references
- oeis: A113235