A259697 - cp's OEIS frontend

A259697 Triangle read by rows: T(n,k) = number of rook patterns on n X n board where bottom rook is in column k.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	2
6	1
7	4
8	5
9	5
10	1
11	9
12	12
13	15
14	15
15	1
16	24
17	32
18	42
19	52
20	52
21	1
22	76
23	99
24	129
25	166
26	203
27	203
28	1
29	279
30	354
31	451
32	575
33	726
34	877
35	877
36	1
37	1156
38	1434
39	1786
40	2232
41	2792
42	3466
43	4140
44	4140
45	1
46	5296
47	6451
48	7883
49	9664
50	11881
51	14621
52	17884
53	21147
54	21147

[1, 1, 1, 1, 2, 2, 1, 4, 5, 5, 1, 9, 12, 15, 15, 1, 24, 32, 42, 52, 52, 1, 76, 99, 129, 166, 203, 203, 1, 279, 354, 451, 575, 726, 877, 877, 1, 1156, 1434, 1786, 2232, 2792, 3466, 4140, 4140, 1, 5296, 6451, 7883, 9664, 11881, 14621, 17884, 21147, 21147]

cp's OEIS Frontend

A259697 Triangle read by rows: T(n,k) = number of rook patterns on n X n board where bottom rook is in column k.

Table of values

List of values