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105, 8112, 396792, 15663360, 544475232, 17388675072, 522638463744, 15007609257984, 415870219556352, 11199568168353792, 294628320168579072, 7600751972236394496, 192860109239084236800, 4824494454867178291200, 119207140785929743368192, 2913796518104633469566976
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refs;
listen;
history;
text;
internal format)
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OFFSET
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3,1
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LINKS
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FORMULA
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Recurrence: (n-4)*(n-3)*(n-2)*(2100*n^3 - 22577*n^2 + 77702*n - 86760)*a(n) = 48*(n-4)*(37800*n^5 - 463086*n^4 + 2015601*n^3 - 3767956*n^2 + 2822996*n - 645120)*a(n-2) - 20736*(n-2)*(3*n - 10)*(3*n - 8)*(2100*n^3 - 9977*n^2 + 12594*n - 4864)*a(n-4).
a(n) ~ 7 * 2^(2*n - 9/2) * 3^(3*n/2 - 3/2) * n^(5/2) / (5*sqrt(Pi)).
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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