A382978 - cp's OEIS frontend

A382978 Expansion of Product_{k>=1} (1 + (2^k - 1) * x^k).

n	a(n)
0	1
1	1
2	3
3	10
4	22
5	67
6	160
7	433
8	986
9	2774
10	6386
11	16214
12	39201
13	95868
14	229644
15	569707
16	1324730
17	3186326
18	7664378
19	17955006
20	42497434
21	100710158
22	235492595
23	549267552
24	1288847672
25	2990756088
26	6958113345
27	16148883002
28	37286262238
29	85880711282
30	198840926982
31	454980392570

[1, 1, 3, 10, 22, 67, 160, 433, 986, 2774, 6386, 16214, 39201, 95868, 229644, 569707, 1324730, 3186326, 7664378, 17955006, 42497434, 100710158, 235492595, 549267552, 1288847672, 2990756088, 6958113345, 16148883002, 37286262238, 85880711282, 198840926982, 454980392570]

cp's OEIS Frontend

A382978 Expansion of Product_{k>=1} (1 + (2^k - 1) * x^k).

Table of values

List of values