A348118 - OEIS

A348118

a(n) is the number of (strict) chains of subspaces with ends 0 and (F_4)^n, counted up to coordinate permutation.

1, 4, 39, 876, 60117, 14466888 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	LINKS	`Table of n, a(n) for n=1..6.`
	FORMULA	`a(n) = Sum_{L partition of n} A348115(n, L) * A036038(len(L), sig(L)), where sig(L) is the partition composed by the part multiplicities of L.`
	CROSSREFS	`Cf. A348115, A036038, A347842.` `Sequence in context: A188418 A136653 A165434 * A341473 A086217 A203197` `Adjacent sequences: A348115 A348116 A348117 * A348119 A348120 A348121`
	KEYWORD	`more,nonn`
	AUTHOR	`Álvar Ibeas, Oct 01 2021`
	STATUS	`approved`

Last modified July 7 12:47 EDT 2022. Contains 355148 sequences. (Running on oeis4.)