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%I #10 Apr 19 2017 15:44:07
%S 2,1,2,2,5,12,36,120,454,1872,8377,40320,207359,1133279,6552135,
%T 39916800,255371836,1710542069,11964299313,87178291200,660355655454,
%U 5189998453041,42249866656928,355687428096000,3092228855290535,27724322986333719,256040133328476466
%N a(n) = ceiling(Gamma(3n/4)).
%C There are three integer-valued interpolations between successive factorials.
%H Clark Kimberling, <a href="/A285003/b285003.txt">Table of n, a(n) for n = 1..600</a>
%F a(n) = ceiling(Gamma(3n/4)).
%p seq(ceil(GAMMA(3*n/4)),n=1..50); # _Robert Israel_, Apr 19 2017
%t Table[Ceiling[Gamma[3n/4]], {n, 1, 35}]
%Y Cf. A000142, A285002.
%K nonn,easy
%O 1,1
%A _Clark Kimberling_, Apr 17 2017
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