A247711 - cp's OEIS frontend

A247711 Number T(n,k) of tilings of a 5 X n rectangle with pentominoes of any shape and exactly k pentominoes of shape X; triangle T(n,k), n>=0, read by rows.

n	a(n)
0	1
1	1
2	5
3	55
4	1
5	493
6	8
7	3930
8	76
9	27207
10	734
11	9
12	207118
13	7414
14	157
15	1622723
16	71986
17	2064
18	8
19	12544364
20	638499
21	22232
22	259
23	95912510
24	5558790
25	222964
26	3898
27	50
28	732066083
29	47971603
30	2179607
31	49537
32	948
33	8
34	5616480627
35	410502410
36	20604626
37	564498
38	13889
39	180

[1, 1, 5, 55, 1, 493, 8, 3930, 76, 27207, 734, 9, 207118, 7414, 157, 1622723, 71986, 2064, 8, 12544364, 638499, 22232, 259, 95912510, 5558790, 222964, 3898, 50, 732066083, 47971603, 2179607, 49537, 948, 8, 5616480627, 410502410, 20604626, 564498, 13889, 180]

cp's OEIS Frontend

A247711 Number T(n,k) of tilings of a 5 X n rectangle with pentominoes of any shape and exactly k pentominoes of shape X; triangle T(n,k), n>=0, read by rows.

Table of values

List of values