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A240420 Number of nX4 0..3 arrays with no element equal to two plus the sum of elements to its left or two plus the sum of elements above it or two plus the sum of the elements diagonally to its northwest, modulo 4 1
31, 553, 7857, 97269, 1197511, 14516959, 182716785, 2283795777, 29455167803, 375686161591, 4901784033237, 63140564981693, 827270124725239, 10706403464237323, 140419032613955165, 1821674119289634819 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A240422

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A038395 A261620 A196492 * A022755 A003533 A005462

Adjacent sequences:  A240417 A240418 A240419 * A240421 A240422 A240423

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 04 2014

STATUS

approved

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Last modified September 15 02:19 EDT 2019. Contains 327062 sequences. (Running on oeis4.)