A222201 - cp's OEIS frontend

A222201 Write n=3i+j, 0<=j<3; a(n) = number of Hamiltonian cycles on square grid of points of size 2i+2 X 2i+2 (if j=0), 2i+2 X 2i+3 (j=1) or 2i+3 X 2i+4 (j=2).

n	a(n)
0	1
1	1
2	2
3	6
4	14
5	154
6	1072
7	5320
8	301384
9	4638576
10	49483138
11	13916993782
12	467260456608
13	10754797724124
14	14746957510647992
15	1076226888605605706
16	53540340738182687296
17	354282765498796010420944
18	56126499620491437281263608
19	6040964455632840415885507728
20	191678405883294971709423926242394
21	65882516522625836326159786165530572

[1, 1, 2, 6, 14, 154, 1072, 5320, 301384, 4638576, 49483138, 13916993782, 467260456608, 10754797724124, 14746957510647992, 1076226888605605706, 53540340738182687296, 354282765498796010420944, 56126499620491437281263608, 6040964455632840415885507728, 191678405883294971709423926242394, 65882516522625836326159786165530572]

cp's OEIS Frontend

A222201 Write n=3i+j, 0<=j<3; a(n) = number of Hamiltonian cycles on square grid of points of size 2i+2 X 2i+2 (if j=0), 2i+2 X 2i+3 (j=1) or 2i+3 X 2i+4 (j=2).

Table of values

List of values