A348116 a(n) is the number of (strict) chains of subspaces with ends 0 and (F_2)^n, counted up to coordinate permutation.

1, 3, 13, 82, 747, 10248, 217703, 7530572, 447825441

Offset: 1

Author

Álvar Ibeas, Oct 01 2021

Keywords

• more
• nonn

Crossrefs

Cf. A348113, A036038, A289545.

Formula

a(n) = Sum_{L partition of n} A348113(n, L) * A036038(len(L), sig(L)), where sig(L) is the partition composed by the part multiplicities of L.