A074598 Numerator of 4 * H(n,4,1), a generalized harmonic number. See A075136.

4, 24, 236, 3248, 57556, 416152, 2136452, 63349408, 710302388, 26725332056, 1112171931196, 375714836272, 2662087948804, 142662781936712, 2738366988282628, 168623511779891008, 170109214167178588

Offset

1,1

Links

Table of n, a(n) for n=1..17.

Mathematica

Table[ Numerator[ Sum[1/i, {i, 1/4, n}]], {n, 1, 20}]

Crossrefs

The denominators are in A051539.

Cf. A075136.

Sequence in context: A244760 A240403 A366734 * A346631 A307826 A239840

Adjacent sequences: A074595 A074596 A074597 * A074599 A074600 A074601

Keyword

easy,frac,nonn

Author

Robert G. Wilson v, Aug 27 2002

Status

approved