A180143 - cp's OEIS frontend

A180143 Eight rooks and one berserker on a 3 X 3 chessboard. G.f.: (1 + x^2)/(1 - 4x + x^2 + 2x^3).

n	a(n)
0	1
1	4
2	16
3	58
4	208
5	742
6	2644
7	9418
8	33544
9	119470
10	425500
11	1515442
12	5397328
13	19222870
14	68463268
15	243835546
16	868433176
17	3092970622
18	11015778220
19	39233275906
20	139731384160
21	497660704294
22	1772444881204
23	6312656052202

[1, 4, 16, 58, 208, 742, 2644, 9418, 33544, 119470, 425500, 1515442, 5397328, 19222870, 68463268, 243835546, 868433176, 3092970622, 11015778220, 39233275906, 139731384160, 497660704294, 1772444881204, 6312656052202]

cp's OEIS Frontend

A180143 Eight rooks and one berserker on a 3 X 3 chessboard. G.f.: (1 + x^2)/(1 - 4x + x^2 + 2x^3).

Table of values

List of values

cp's OEIS Frontend

A180143 Eight rooks and one berserker on a 3 X 3 chessboard. G.f.: (1 + x^2)/(1 - 4*x + x^2 + 2*x^3).

Table of values

List of values

A180143 Eight rooks and one berserker on a 3 X 3 chessboard. G.f.: (1 + x^2)/(1 - 4x + x^2 + 2x^3).