A222762 - cp's OEIS frontend

A222762 Number of n X n 0..1 arrays with exactly floor(n X n/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order.

n	a(n)
1	1
2	3
3	13
4	465
5	19766
6	4479721
7	1139211468
8	1529339764557
9	2262949907256195
10	17477638597595547101
11	147986778995780201368346
12	6492535454463031607390365256

[1, 3, 13, 465, 19766, 4479721, 1139211468, 1529339764557, 2262949907256195, 17477638597595547101, 147986778995780201368346, 6492535454463031607390365256]

cp's OEIS Frontend

A222762 Number of n X n 0..1 arrays with exactly floor(n X n/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order.

Table of values

List of values