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A231498 Dimensions of algebraic generators of Hopf algebra ASM. 2

%I #18 Feb 14 2023 14:57:10

%S 0,1,1,4,29,343,6536,202890,10403135,889855638,127697994191,

%T 30835684607975,12548984661501958,8614128967701807873,

%U 9978249783441321029726,19509076435279656169459710,64388117502939421121766340671,358740327955249666636651777774959

%N Dimensions of algebraic generators of Hopf algebra ASM.

%C Number of alternating sign matrices of size n which are indecomposable by direct sum. - _Ludovic Schwob_, Feb 11 2023

%H Ludovic Schwob, <a href="/A231498/b231498.txt">Table of n, a(n) for n = 0..100</a>

%H H. Cheballah, S. Giraudo, and R. Maurice, <a href="http://arxiv.org/abs/1306.6605">Combinatorial Hopf algebra structure on packed square matrices</a>, arXiv preprint arXiv:1306.6605 [math.CO], 2013-2015.

%F G.f.: A(x) = 1 - 1/ASM(x) where ASM(x) is the g.f. of A005130. - _Ludovic Schwob_, Feb 11 2023

%Y Cf. A005130.

%K nonn

%O 0,4

%A _N. J. A. Sloane_, Nov 09 2013

%E More terms from _Ludovic Schwob_, Feb 11 2023

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Last modified March 29 01:36 EDT 2024. Contains 371264 sequences. (Running on oeis4.)