A284943 - cp's OEIS frontend

A284943 Expansion of Sum_{p prime, k>=1} x^(p^k)(1 - x)^2/(1 - 2x)^2.

n	a(n)
1	0
2	1
3	3
4	8
5	20
6	47
7	110
8	251
9	564
10	1251
11	2750
12	5994
13	12978
14	27934
15	59825
16	127565
17	270959
18	573575
19	1210466
20	2547562
21	5348385
22	11203292
23	23419629
24	48865346
25	101782870
26	211670094
27	439548898
28	911515214
29	1887865266
30	3905400206
31	8070139762
32	16658958223
33	34355273843

[0, 1, 3, 8, 20, 47, 110, 251, 564, 1251, 2750, 5994, 12978, 27934, 59825, 127565, 270959, 573575, 1210466, 2547562, 5348385, 11203292, 23419629, 48865346, 101782870, 211670094, 439548898, 911515214, 1887865266, 3905400206, 8070139762, 16658958223, 34355273843]

cp's OEIS Frontend

A284943 Expansion of Sum_{p prime, k>=1} x^(p^k)(1 - x)^2/(1 - 2x)^2.

Table of values

List of values

cp's OEIS Frontend

A284943 Expansion of Sum_{p prime, k>=1} x^(p^k)*(1 - x)^2/(1 - 2*x)^2.

Table of values

List of values

A284943 Expansion of Sum_{p prime, k>=1} x^(p^k)(1 - x)^2/(1 - 2x)^2.