A239843 - OEIS

A239843

Number of n X n 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it or two plus the sum of the elements diagonally to its northwest, modulo 4

2, 8, 68, 1613, 94613, 15039319, 6712505927

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OFFSET

1,1

COMMENTS

Diagonal of A239849

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

Some solutions for n=4

..0..3..3..0....3..3..0..0....0..0..3..3....0..0..0..3....0..0..3..3

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

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

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

CROSSREFS

Sequence in context: A113087 A322495 A332637 * A099729 A373062 A123117

Adjacent sequences: A239840 A239841 A239842 * A239844 A239845 A239846

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 28 2014

STATUS

approved