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A302190
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Hurwitz logarithm of natural numbers 1,2,3,4,5,...
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0
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0, 2, -1, 2, -6, 24, -120, 720, -5040, 40320, -362880, 3628800, -39916800, 479001600, -6227020800, 87178291200, -1307674368000, 20922789888000, -355687428096000, 6402373705728000, -121645100408832000, 2432902008176640000, -51090942171709440000
(list;
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listen;
history;
text;
internal format)
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OFFSET
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0,2
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COMMENTS
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In the ring of Hurwitz sequences all members have offset 0.
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LINKS
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Xing Gao and William F. Keigher, Interlacing of Hurwitz series, Communications in Algebra, 45:5 (2017), 2163-2185, DOI: 10.1080/00927872.2016.1226885. See Ex. 2.16.
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FORMULA
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E.g.f. is log of Sum_{n >= 0} (n+1)*x^n/n!.
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MAPLE
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# first load Maple commands for Hurwitz operations from link
s:=[seq(n, n=1..64)];
Hlog(s);
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PROG
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(Sage)
A = PowerSeriesRing(QQ, 'x')
f = A(list(range(1, 30))).ogf_to_egf().log()
print(list(f.egf_to_ogf()))
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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STATUS
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approved
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