A277968 - cp's OEIS frontend

A277968 Expansion of ((Product_{n>=1} (1 - x^(3*n))/(1 - x^n)^3) - 1)/3 in powers of x.

n	a(n)
0	0
1	1
2	3
3	7
4	16
5	33
6	66
7	125
8	231
9	412
10	720
11	1227
12	2056
13	3380
14	5478
15	8745
16	13792
17	21483
18	33114
19	50510
20	76344
21	114356
22	169920
23	250503
24	366666
25	532975
26	769758
27	1104847
28	1576640
29	2237331
30	3158208
31	4435502
32	6199479
33	8624820
34	11946096
35	16475880
36	22630864
37	30962990

[0, 1, 3, 7, 16, 33, 66, 125, 231, 412, 720, 1227, 2056, 3380, 5478, 8745, 13792, 21483, 33114, 50510, 76344, 114356, 169920, 250503, 366666, 532975, 769758, 1104847, 1576640, 2237331, 3158208, 4435502, 6199479, 8624820, 11946096, 16475880, 22630864, 30962990]

cp's OEIS Frontend

A277968 Expansion of ((Product_{n>=1} (1 - x^(3*n))/(1 - x^n)^3) - 1)/3 in powers of x.

Table of values

List of values