A223209 - cp's OEIS frontend

A223209 T(n,k)=Rolling icosahedron face footprints: number of nXk 0..19 arrays starting with 0 where 0..19 label faces of an icosahedron and every array movement to a horizontal or vertical neighbor moves across an icosahedral edge.

n	a(n)
1	1
2	3
3	3
4	9
5	15
6	9
7	27
8	75
9	75
10	27
11	81
12	375
13	657
14	375
15	81
16	243
17	1875
18	5763
19	5763
20	1875
21	243
22	729
23	9375
24	50553
25	90111
26	50553
27	9375
28	729
29	2187
30	46875
31	443451
32	1412907
33	1412907
34	443451
35	46875
36	2187
37	6561
38	234375
39	3889953
40	22163655
41	39868737
42	22163655

[1, 3, 3, 9, 15, 9, 27, 75, 75, 27, 81, 375, 657, 375, 81, 243, 1875, 5763, 5763, 1875, 243, 729, 9375, 50553, 90111, 50553, 9375, 729, 2187, 46875, 443451, 1412907, 1412907, 443451, 46875, 2187, 6561, 234375, 3889953, 22163655, 39868737, 22163655]

cp's OEIS Frontend

A223209 T(n,k)=Rolling icosahedron face footprints: number of nXk 0..19 arrays starting with 0 where 0..19 label faces of an icosahedron and every array movement to a horizontal or vertical neighbor moves across an icosahedral edge.

Table of values

List of values