

A067746


Denominator of ((3 * n  2)/(n^(2 * n  1) * (2 * n  1) * 4^(n  1))).


1



1, 24, 19440, 3670016, 4500000000, 255409127424, 5159146026151936, 4323455642275676160, 18580248257778920521728, 12451840000000000000000000, 162954214196559334212035936256, 319540863203713904815925769535488
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OFFSET

1,2


LINKS

Table of n, a(n) for n=1..12.
D. S. Mitrinovic and Slavko Simic, Special Functions from Long Ago: 5626, Amer. Math. Monthly 109, (2002), p. 8384.


PROG

(PARI) vector(20, n, denominator(((3*n  2)/(n^(2*n  1)*(2*n  1)*4^(n  1))))) \\ Michel Marcus, Feb 16 2015
(MAGMA) [Denominator((3*n2)/((n^(2*n1)*(2*n1)*4^(n1)))): n in [1..15]]; // Vincenzo Librandi, Feb 16 2015


CROSSREFS

Cf. A067745.
Sequence in context: A279299 A145496 A279655 * A111404 A167066 A166338
Adjacent sequences: A067743 A067744 A067745 * A067747 A067748 A067749


KEYWORD

easy,frac,nonn


AUTHOR

Marc LeBrun, Jan 29 2002


EXTENSIONS

a(12) from Vincenzo Librandi, Feb 16 2015


STATUS

approved



