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A239652 Number of 4Xn 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, modulo 4 1
22, 560, 13476, 320314, 7629186, 181039448, 4304123072, 102200616210, 2428626527384, 57685354968172, 1370565397733518, 32557886444429002, 773502177670875660, 18375412388378425556, 436547133372227822360 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A239649

LINKS

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

R. H. Hardin, Empirical recurrence of order 91

FORMULA

Empirical recurrence of order 91 (see link above)

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A203456 A271266 A333899 * A223883 A223890 A240369

Adjacent sequences:  A239649 A239650 A239651 * A239653 A239654 A239655

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 23 2014

STATUS

approved

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Last modified October 17 21:17 EDT 2021. Contains 348065 sequences. (Running on oeis4.)