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A154030
List of pairs of numbers:{2*(n^2 - 1), (2*n)!/n!} such that F((2*n)!/n!)=2*(n^2 - 1).
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0, 2, 6, 12, 16, 120, 30, 1680, 48, 30240, 70, 665280, 96, 17297280, 126, 518918400, 160, 17643225600, 198, 670442572800, 240, 28158588057600, 286, 1295295050649600, 336, 64764752532480000, 390, 3497296636753920000, 448
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 16 17:18 EST 2009. Contains 170825 sequences.
AT&T Labs Research
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