A192805 - cp's OEIS frontend

A192805 Constant term in the reduction of the polynomial 1+x+x^2+...+x^n by x^3->x^2+2x+1. See Comments.

n	a(n)
0	1
1	1
2	1
3	2
4	3
5	6
6	12
7	25
8	53
9	113
10	242
11	519
12	1114
13	2392
14	5137
15	11033
16	23697
17	50898
18	109323
19	234814
20	504356
21	1083305
22	2326829
23	4997793
24	10734754
25	23057167
26	49524466
27	106373552
28	228479649
29	490751217
30	1054084065
31	2264066146
32	4862985491

[1, 1, 1, 2, 3, 6, 12, 25, 53, 113, 242, 519, 1114, 2392, 5137, 11033, 23697, 50898, 109323, 234814, 504356, 1083305, 2326829, 4997793, 10734754, 23057167, 49524466, 106373552, 228479649, 490751217, 1054084065, 2264066146, 4862985491]

cp's OEIS Frontend

A192805 Constant term in the reduction of the polynomial 1+x+x^2+...+x^n by x^3->x^2+2x+1. See Comments.

Table of values

List of values