A022445 - cp's OEIS frontend

A022445 Number of self-avoiding closed walks (from 0 to 0) of length 2n in the strip {0, 1, 2} X Z of the square lattice Z X Z.

n	a(n)
0	1
1	0
2	4
3	10
4	34
5	94
6	222
7	516
8	1202
9	2738
10	6110
11	13496
12	29586
13	64350
14	139006
15	298636
16	638578
17	1359754
18	2884638
19	6099552
20	12859730
21	27040694
22	56723774
23	118732340
24	248034354
25	517208034
26	1076694622
27	2237946376
28	4645007122

[1, 0, 4, 10, 34, 94, 222, 516, 1202, 2738, 6110, 13496, 29586, 64350, 139006, 298636, 638578, 1359754, 2884638, 6099552, 12859730, 27040694, 56723774, 118732340, 248034354, 517208034, 1076694622, 2237946376, 4645007122]

cp's OEIS Frontend

A022445 Number of self-avoiding closed walks (from 0 to 0) of length 2n in the strip {0, 1, 2} X Z of the square lattice Z X Z.

Table of values

List of values