A067746 Denominator of ((3 * n - 2)/(n^(2 * n - 1) * (2 * n - 1) * 4^(n - 1))).

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

Offset: 1

Author

Marc LeBrun, Jan 29 2002

Keywords

• easy
• frac
• nonn

Links

• D. S. Mitrinovic and Slavko Simic, Special Functions from Long Ago: 5626, Amer. Math. Monthly 109, (2002), p. 83-84.

Crossrefs

Cf. A067745.

Programs

Magma

[Denominator((3*n-2)/((n^(2*n-1)*(2*n-1)*4^(n-1)))): n in [1..15]]; // Vincenzo Librandi, Feb 16 2015

PARI

vector(20, n, denominator(((3*n - 2)/(n^(2*n - 1)*(2*n - 1)*4^(n - 1))))) \\ Michel Marcus, Feb 16 2015

Extensions

a(12) from Vincenzo Librandi, Feb 16 2015