A276171 - cp's OEIS frontend

A276171 Irregular triangle T(n,k) read by rows: The number of tilings of the n X n board by 1 X 1 and k 3 X 3 squares, n >= 0, k >= 0.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	4
7	1
8	9
9	1
10	16
11	30
12	12
13	1
14	1
15	25
16	132
17	200
18	79
19	1
20	36
21	360
22	1232
23	1246
24	1
25	49
26	780
27	5048
28	13211
29	11984
30	4526
31	758
32	51
33	1
34	1
35	64
36	1470
37	15468
38	78851
39	193672
40	234394
41	139188
42	37760
43	3600
44	1
45	81
46	2520
47	38972
48	324721
49	1490562
50	3761236
51	5052890
52	3305328
53	807648

[1, 1, 1, 1, 1, 1, 4, 1, 9, 1, 16, 30, 12, 1, 1, 25, 132, 200, 79, 1, 36, 360, 1232, 1246, 1, 49, 780, 5048, 13211, 11984, 4526, 758, 51, 1, 1, 64, 1470, 15468, 78851, 193672, 234394, 139188, 37760, 3600, 1, 81, 2520, 38972, 324721, 1490562, 3761236, 5052890, 3305328, 807648]

cp's OEIS Frontend

A276171 Irregular triangle T(n,k) read by rows: The number of tilings of the n X n board by 1 X 1 and k 3 X 3 squares, n >= 0, k >= 0.

Table of values

List of values