A239989 - OEIS

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A239989

Number of 5Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or two plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4

1

7, 40, 261, 1391, 7113, 31226, 131242, 514539, 1914507, 6772946, 22897312, 74168162, 230889987, 691544987, 1994352403, 5541664374, 14851119427, 38433580993, 96194422578, 233234971795, 548761214881, 1255035407604

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

OFFSET

1,1

COMMENTS

Row 5 of A239986

LINKS

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

R. H. Hardin, Empirical polynomial of degree 24

FORMULA

Empirical polynomial of degree 24 (see link above)

EXAMPLE

Some solutions for n=3

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

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

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

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

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

CROSSREFS

Sequence in context: A051814 A154968 A121582 * A356459 A226223 A356046

Adjacent sequences: A239986 A239987 A239988 * A239990 A239991 A239992

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 30 2014

STATUS

approved