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%I #10 Nov 26 2017 19:31:40
%S 1,1021020,6016814703900,41477110789150966020,
%T 304331361887290342345862940,2309513382640863232775760738593520,
%U 17900786683992090777583802478540374204100,140773522690118901080808611014971776285838687000
%N a(n) = (18*n)!*n!/((9*n)!*(6*n)!*(4*n)!).
%F G.f.: hypergeom([1/18, 5/18, 7/18, 11/18, 13/18, 17/18], [1/4, 1/3, 1/2, 2/3, 3/4], 8503056*x).
%t Array[(18 #)!*#!/((9 #)!*(6 #)!*(4 #)!) &, 8, 0] (* _Michael De Vlieger_, Nov 23 2017 *)
%t CoefficientList[ Series[ HypergeometricPFQ[{1/18, 5/18, 7/18, 11/18, 13/18, 17/18}, {1/4, 1/3, 1/2, 2/3, 3/4}, 8503056 x], {x, 0, 8}], x] (* _Robert G. Wilson v_, Nov 23 2017 *)
%Y Cf. A295431.
%K nonn
%O 0,2
%A _Gheorghe Coserea_, Nov 23 2017
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