Triangle read by rows: T(n,m) (n >= 1, 1 <= m <= n) = number of set partitions of [n], avoiding 123454, with m blocks.

A250119

Triangle read by rows: T(n,m) (n >= 1, 1 <= m <= n) = number of set partitions of [n], avoiding 123454, with m blocks.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =1a(7) =7a(8) =6a(9) =1a(10) =1a(11) =15a(12) =25a(13) =10a(14) =1a(15) =1a(16) =31a(17) =90a(18) =65a(19) =14a(20) =1a(21) =1a(22) =63a(23) =301a(24) =350a(25) =121a(26) =18a(27) =1a(28) =1a(29) =127

External references