A222744 - OEIS

A222744

Number of nX5 0..3 arrays with exactly floor(nX5/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order

20, 7546, 6363724, 5989744766, 4906560167364, 4777709698876890, 4001484076145095954, 4007703500495273447052, 3396887706615718195456805, 3458279283218841589487839312, 2953874525277026876992243827814

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

OFFSET

1,1

COMMENTS

Column 5 of A222747

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..51

EXAMPLE

Some solutions for n=3

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

..0..1..3..0..1....1..0..2..3..3....1..1..0..3..0....1..2..2..0..3

..3..1..2..2..2....3..0..1..2..1....3..3..2..1..2....0..2..3..2..1