A309172 - cp's OEIS frontend

A309172 Expansion of Product_{k>=1} 1/(1 - (1 + x + x^2) * x^k).

n	a(n)
0	1
1	1
2	3
3	7
4	15
5	31
6	64
7	128
8	254
9	496
10	961
11	1844
12	3516
13	6662
14	12564
15	23593
16	44153
17	82385
18	153351
19	284857
20	528235
21	978148
22	1809120
23	3342722
24	6171318
25	11385733
26	20994298
27	38693809
28	71288111
29	131297855
30	241761727
31	445068646
32	819205061
33	1507641487
34	2774307387
35	5104712633

[1, 1, 3, 7, 15, 31, 64, 128, 254, 496, 961, 1844, 3516, 6662, 12564, 23593, 44153, 82385, 153351, 284857, 528235, 978148, 1809120, 3342722, 6171318, 11385733, 20994298, 38693809, 71288111, 131297855, 241761727, 445068646, 819205061, 1507641487, 2774307387, 5104712633]

cp's OEIS Frontend

A309172 Expansion of Product_{k>=1} 1/(1 - (1 + x + x^2) * x^k).

Table of values

List of values