|
| |
|
|
A073100
|
|
Denominator of b(n) = n*sum(k=2^n,2^(n+1)-1,(-1)^k/k).
|
|
1
|
|
|
|
6, 210, 120120, 18050444111700, 118226688410282226751136160, 1112813007583117631616979100370019711878239390670756000, 1191035057635417333689929196555456096447880322064975132139675263681349241137859495385119040334214863238544000
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
REFERENCES
|
G. Vacca,"A new series for the Eulerian constant", Quart. J. Pure Appl. Math.,1910, vol. 41, p. 363-368
|
|
|
LINKS
|
Table of n, a(n) for n=1..7.
|
|
|
FORMULA
|
Sum( k>=1, b(k) ) = gamma =0, 5772.....
|
|
|
PROG
|
(PARI) a(n)=denominator( n*sum(k=2^n, 2^(n+1)-1, (-1)^k/k))
|
|
|
CROSSREFS
|
Cf. A001620, A073099.
Sequence in context: A238685 A099788 A126676 * A093536 A002037 A332989
Adjacent sequences: A073097 A073098 A073099 * A073101 A073102 A073103
|
|
|
KEYWORD
|
easy,frac,nonn
|
|
|
AUTHOR
|
Benoit Cloitre, Aug 18 2002
|
|
|
STATUS
|
approved
|
| |
|
|
