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A135808
Numerator of z-sequence for the Sheffer (Appell type) triangle A134832 (circular succession numbers).
3
0, 0, 1, 1, 8, 8, 159, 659, 6824, 4668, 517581, 4941685, 61043344, 367628164, 10269016939, 147207286503, 2322683458544, 19149119743336, 677630804946393, 2516289402924117, 247342217288517496, 2548438247219028464
OFFSET
0,5
COMMENTS
The denominators are given in A126352.
For the a- and z-sequences of Sheffer triangles see the W. Lang link under A006232.
FORMULA
a(n) = denominator(r(n)) with the rationals r(n) from the given e.g.f.
E.g.f. for rationals r(n): (1-exp(x)/(1-log(1-x)))/x.
EXAMPLE
Rationals r(n)=[0,0,1/3, 1/4, 8/5, 8/3, 159/7, 659/8, 6824/9, 4668, 517581/11,...].
CROSSREFS
Cf. A126352 (denominators), A134832.
Sequence in context: A074191 A090630 A182922 * A320915 A298905 A059196
KEYWORD
nonn,easy
AUTHOR
Wolfdieter Lang, Dec 06 2007
STATUS
approved