|
|
A283337
|
|
Expansion of exp( Sum_{n>=1} -sigma_7(n)*x^n/n ) in powers of x.
|
|
6
|
|
|
1, -1, -64, -665, -1351, 33111, 408149, 1959491, -4502590, -149420286, -1182474566, -3678670450, 22384197409, 377982157035, 2474860645111, 6161653683590, -48899064011245, -695916857379611, -4275491639488601, -10750056317745704, 69316545348329853
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,3
|
|
LINKS
|
|
|
FORMULA
|
G.f.: Product_{n>=1} (1 - x^n)^(n^6).
a(n) = -(1/n)*Sum_{k=1..n} sigma_7(k)*a(n-k).
|
|
CROSSREFS
|
Cf. A023875 (exp( Sum_{n>=1} sigma_7(n)*x^n/n )).
|
|
KEYWORD
|
sign
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|