This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A348117 #8 Oct 03 2021 19:26:56
%S A348117 1,4,26,334,8474,511198,81719819
%N A348117 a(n) is the number of (strict) chains of subspaces with ends 0 and (F_3)^n, counted up to coordinate permutation.
%F A348117 a(n) = Sum_{L partition of n} A348114(n, L) * A036038(len(L), sig(L)), where sig(L) is the partition composed by the part multiplicities of L.
%Y A348117 Cf. A348114, A036038, A347841.
%K A348117 more,nonn
%O A348117 1,2
%A A348117 _Álvar Ibeas_, Oct 01 2021