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%I #8 Nov 23 2013 14:07:02
%S 1,4,16,58,208,754,2770,10294,38608,145858,554266,2116294,8112466,
%T 31201798,120349798,465352558,1803241168,7000818658,27225405898,
%U 106035791398,413539586458,1614773623318,6312296891158,24700292182798,96742811049298,379231819313254
%N a(n) = 3*A000984(n) - 2.
%C Second inverse binomial transform of the sequence = A134763, (same as A134762 but with interpolated two's).
%F G.f.: 3/sqrt(1-4*x) - 2/(1-x). - _Sergei N. Gladkovskii_, Nov 21 2013
%e a(2) = 16 = 3*A000984(2) - 2 = 3*6 - 2.
%o (PARI) a(n) = 3*binomial(2*n, n) - 2; \\ _Michel Marcus_, Nov 22 2013
%Y Cf. A000984, A134762.
%K nonn
%O 0,2
%A _Gary W. Adamson_, Nov 09 2007
%E More terms from _Michel Marcus_, Nov 22 2013
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