A240463 Number of 4Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or three plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4

28, 476, 8187, 143237, 2501883, 43654661, 761700369, 13290291978, 231879123545, 4045526615228, 70580191049583, 1231367510496942, 21482798448261309, 374794402280678279, 6538751854554181415, 114076545131533814184

Offset

1,1

Comments

Row 4 of A240460

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..2..2..0..2....0..0..2..0....0..0..0..2....0..2..2..2....0..0..2..2
..0..2..2..2....2..2..2..2....2..0..0..0....2..2..0..0....0..0..0..2
..0..2..2..2....2..0..2..2....3..1..0..3....0..2..0..0....0..0..3..2
..0..2..2..0....0..0..2..2....3..3..2..2....3..3..0..0....0..0..2..2

Crossrefs

Sequence in context: A115225 A223997 A263949 * A140107 A028170 A211677

Adjacent sequences: A240460 A240461 A240462 * A240464 A240465 A240466

Keyword

nonn

Author

R. H. Hardin, Apr 05 2014

Status

approved