A162420 - cp's OEIS frontend

A162420 G.f.: A(x) = exp( Sum_{n>=1} sigma(n)|A002129(n)|x^n/n ).

n	a(n)
0	1
1	1
2	2
3	7
4	16
5	28
6	57
7	118
8	238
9	432
10	792
11	1491
12	2759
13	4836
14	8522
15	15126
16	26419
17	45114
18	76883
19	130792
20	220578
21	367144
22	608252
23	1005102
24	1649904
25	2684354
26	4349068
27	7022762
28	11278628
29	18002603
30	28621347
31	45345249
32	71528789
33	112295812

[1, 1, 2, 7, 16, 28, 57, 118, 238, 432, 792, 1491, 2759, 4836, 8522, 15126, 26419, 45114, 76883, 130792, 220578, 367144, 608252, 1005102, 1649904, 2684354, 4349068, 7022762, 11278628, 18002603, 28621347, 45345249, 71528789, 112295812]

cp's OEIS Frontend

A162420 G.f.: A(x) = exp( Sum_{n>=1} sigma(n)|A002129(n)|x^n/n ).

Table of values

List of values

cp's OEIS Frontend

A162420 G.f.: A(x) = exp( Sum_{n>=1} sigma(n)*|A002129(n)|*x^n/n ).

Table of values

List of values

A162420 G.f.: A(x) = exp( Sum_{n>=1} sigma(n)|A002129(n)|x^n/n ).