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%I #17 Apr 27 2018 10:32:28
%S 1,2,2,80,158,9428,21740,1814144,4326566,480716188,1138919436,
%T 162673628256,377710551084,67537379669352,153236971128120,
%U 33578612305618176,74565718435602822,19669491236331371820,42886189370197775372,13410838610779209885664
%N a(n) = [x^n] ((Sum_{k=0..n} (k+7)!*x^k)/(Sum_{k=0..n} (k+7)!*(-x)^k))^(1/8).
%H Seiichi Manyama, <a href="/A303569/b303569.txt">Table of n, a(n) for n = 0..444</a>
%o (PARI) N=20; x='x+O('x^N); Vec((sum(k=0, N, (k+7)!*x^k)/sum(k=0, N, (k+7)!*(-x)^k))^(1/8))
%Y Cf. A303565, A303567, A303568, A303614.
%K nonn
%O 0,2
%A _Seiichi Manyama_, Apr 26 2018
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