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%I #2 Mar 30 2012 17:30:49
%S 4,24,236,3248,57556,416152,2136452,63349408,710302388,26725332056,
%T 1112171931196,375714836272,2662087948804,142662781936712,
%U 2738366988282628,168623511779891008,170109214167178588
%N Numerator of 4 * H(n,4,1), a generalized harmonic number. See A075136.
%t Table[ Numerator[ Sum[1/i, {i, 1/4, n}]], {n, 1, 20}]
%Y The denominators are in A051539.
%Y Cf. A075136.
%K easy,frac,nonn
%O 1,1
%A _Robert G. Wilson v_, Aug 27 2002
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