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A227791 Central terms of the triangle in A227550. 3

%I

%S 1,2,8,36,176,940,5568,37128,280992,2410812,23250080,249164344,

%T 2934303264,37617633976,521009920256,7748175156240,123095897716800,

%U 2080205257723740,37253560076385120,704703668205036120,14039778681732928800,293831851498842784680

%N Central terms of the triangle in A227550.

%C a(n) = A074911(2*n,n).

%o (Haskell)

%o a227791 n = a227550 (2 * n) n

%Y Cf. A225621.

%K nonn

%O 0,2

%A _Reinhard Zumkeller_, Aug 05 2013

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Last modified October 20 12:47 EDT 2019. Contains 328257 sequences. (Running on oeis4.)