A222428 - OEIS

A222428

Number of nX5 0..2 arrays with exactly floor(nX5/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order

4, 36, 298, 7929, 77053, 2601092, 28654054, 1031825766, 11887826140, 435680320590, 5083894845555, 187837607291427, 2206718413576904, 81926552529032816, 966535136365083102, 36010552757817373905

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 5 of A222430

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..36

EXAMPLE

Some solutions for n=4

..0..0..0..0..0....0..1..0..0..0....0..0..1..0..1....0..0..0..0..0

..0..0..0..1..1....0..0..0..0..0....1..2..1..1..1....0..0..0..0..0

..0..0..1..0..0....0..0..0..2..0....1..1..1..1..1....1..0..0..0..0