A192801 - cp's OEIS frontend

A192801 Constant term in the reduction of the polynomial (x+2)^n by x^3->x^2+x+1. See Comments.

n	a(n)
0	1
1	2
2	4
3	9
4	25
5	84
6	312
7	1199
8	4637
9	17906
10	68976
11	265249
12	1019069
13	3913484
14	15026092
15	57690143
16	221487945
17	850350482
18	3264725772
19	12534190569
20	48122302705
21	184755243892
22	709328262928
23	2723314511871
24	10455585321989
25	40141990468066

[1, 2, 4, 9, 25, 84, 312, 1199, 4637, 17906, 68976, 265249, 1019069, 3913484, 15026092, 57690143, 221487945, 850350482, 3264725772, 12534190569, 48122302705, 184755243892, 709328262928, 2723314511871, 10455585321989, 40141990468066]

cp's OEIS Frontend

A192801 Constant term in the reduction of the polynomial (x+2)^n by x^3->x^2+x+1. See Comments.

Table of values

List of values