Number of distinct ribbon Schur functions with n boxes; also the number of distinct multisets of partitions determined by all coarsenings of compositions of n.
A120421
Number of distinct ribbon Schur functions with n boxes; also the number of distinct multisets of partitions determined by all coarsenings of compositions of n.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =6a(4) =10a(5) =20a(6) =36a(7) =72a(8) =135a(9) =272a(10) =528a(11) =1052a(12) =2080a(13) =4160a(14) =8244a(15) =16508a(16) =32896a(17) =65770a(18) =131328a(19) =262632a(20) =524744a(21) =1049600a(22) =2098176a(23) =4196200a(24) =8390620a(25) =16781312a(26) =33558291a(27) =67116944a(28) =134225920a(29) =268451240
External references
- oeis: A120421