A208582 - OEIS

A208582

Number of 2Xn nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors

2, 12, 152, 3024, 84124, 3057664, 139056380, 7675358704, 502604958608, 38359095933912, 3363791582993716, 334974400169588800, 37509570331200251508, 4683620100177290725336, 647429265450114057846496

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

OFFSET

1,1

COMMENTS

Row 2 of A208581

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..27

EXAMPLE

Some solutions for n=4

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

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

CROSSREFS