A308555 - cp's OEIS frontend

A308555 Expansion of e.g.f. Sum_{k>=1} sigma(k)*(exp(x) - 1)^k/k!, where sigma = sum of divisors (A000203).

n	a(n)
1	1
2	4
3	14
4	53
5	222
6	1011
7	4944
8	25884
9	144963
10	865556
11	5477661
12	36518635
13	255323564
14	1867122987
15	14259709474
16	113593734317
17	942317654779
18	8123227487723
19	72599829900774
20	671199117610868
21	6407156027307909
22	63061416571124056
23	639303956718643041
24	6670690645674913424

[1, 4, 14, 53, 222, 1011, 4944, 25884, 144963, 865556, 5477661, 36518635, 255323564, 1867122987, 14259709474, 113593734317, 942317654779, 8123227487723, 72599829900774, 671199117610868, 6407156027307909, 63061416571124056, 639303956718643041, 6670690645674913424]

cp's OEIS Frontend

A308555 Expansion of e.g.f. Sum_{k>=1} sigma(k)*(exp(x) - 1)^k/k!, where sigma = sum of divisors (A000203).

Table of values

List of values