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a(n) = (30*n)!*(3*n)!*(2*n)!/((15*n)!*(10*n)!*(6*n)!*(4*n)!).
1

%I #4 Nov 28 2017 14:08:32

%S 1,38818159380,11536562100925275834420,

%T 3989159479106945583885404912116080,

%U 1465906104045866242659659916354251554712039220,556781461408491354853035878570347481762539032055736771880,215922525116262430363343223480137348951795607610774441624359247484400

%N a(n) = (30*n)!*(3*n)!*(2*n)!/((15*n)!*(10*n)!*(6*n)!*(4*n)!).

%F G.f.: hypergeom([1/30, 7/30, 11/30, 13/30, 17/30, 19/30, 23/30, 29/30], [1/5, 1/4, 2/5, 1/2, 3/5, 3/4, 4/5], 425152800000*x).

%Y Cf. A295431.

%K nonn

%O 0,2

%A _Gheorghe Coserea_, Nov 28 2017

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Last modified September 21 20:27 EDT 2024. Contains 376089 sequences. (Running on oeis4.)