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G_n(1).
1

%I #8 Aug 22 2018 15:53:22

%S 0,1,2,7,20,66,218,725

%N G_n(1).

%C Needs a better definition, but the source is readily available on the arXiv. - _N. J. A. Sloane_, Aug 22 2018

%H Shishuo Fu, Dazhao Tang, Bin Han, Jiang Zeng, <a href="https://arxiv.org/abs/1805.08945">Gamma expansions of q-Narayana polynomials, pattern avoidance and the (-1)-phenomenon</a>, arXiv:1805.08945 [math.CO], 2018. See p. 27.

%Y Cf. A318233.

%K nonn,more

%O 1,3

%A _Michael De Vlieger_, Aug 21 2018