A230170 - cp's OEIS frontend

A230170 Number of n X 2 0..2 arrays x(i,j) with each element horizontally, vertically, diagonally or antidiagonally next to at least one element with value 2-x(i,j).

n	a(n)
1	3
2	27
3	193
4	1407
5	10211
6	73417
7	530771
8	3841171
9	27770777
10	200748959
11	1451396131
12	10493696945
13	75868350707
14	548518150083
15	3965728577777
16	28671821546207
17	207294285260867
18	1498715914818009
19	10835559670997043
20	78339967436748115

[3, 27, 193, 1407, 10211, 73417, 530771, 3841171, 27770777, 200748959, 1451396131, 10493696945, 75868350707, 548518150083, 3965728577777, 28671821546207, 207294285260867, 1498715914818009, 10835559670997043, 78339967436748115]

cp's OEIS Frontend

A230170 Number of n X 2 0..2 arrays x(i,j) with each element horizontally, vertically, diagonally or antidiagonally next to at least one element with value 2-x(i,j).

Table of values

List of values