A192815 - cp's OEIS frontend

A192815 Coefficient of x in the reduction of the polynomial (2*x + 1)^n by x^3 -> x^2 + x + 1.

n	a(n)
0	0
1	2
2	4
3	14
4	72
5	346
6	1612
7	7526
8	35216
9	164786
10	770964
11	3606974
12	16875480
13	78953226
14	369388508
15	1728211222
16	8085563168
17	37828901730
18	176985297700
19	828038725486
20	3874040046440
21	18124981139642
22	84799056637292
23	396738620092614

[0, 2, 4, 14, 72, 346, 1612, 7526, 35216, 164786, 770964, 3606974, 16875480, 78953226, 369388508, 1728211222, 8085563168, 37828901730, 176985297700, 828038725486, 3874040046440, 18124981139642, 84799056637292, 396738620092614]

cp's OEIS Frontend

A192815 Coefficient of x in the reduction of the polynomial (2*x + 1)^n by x^3 -> x^2 + x + 1.

Table of values

List of values