A159595 - cp's OEIS frontend

A159595 G.f.: A(x) = exp( Sum_{n>=1} [ Sum_{k>=1} sigma(k,n)*x^k ]^n/n ).

n	a(n)
0	1
1	1
2	4
3	13
4	56
5	286
6	2008
7	19749
8	280842
9	5762129
10	168873970
11	7023348917
12	412682000624
13	34188301513404
14	3992802803844526
15	656649238572375132
16	152278229304524217542
17	49749953321847000835094

[1, 1, 4, 13, 56, 286, 2008, 19749, 280842, 5762129, 168873970, 7023348917, 412682000624, 34188301513404, 3992802803844526, 656649238572375132, 152278229304524217542, 49749953321847000835094]

cp's OEIS Frontend

A159595 G.f.: A(x) = exp( Sum_{n>=1} [ Sum_{k>=1} sigma(k,n)*x^k ]^n/n ).

Table of values

List of values