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A239821 Number of 3Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the elements above it, modulo 4 1
11, 113, 1480, 18728, 232272, 2912793, 36627126, 459870638, 5774508494, 72538478424, 911227478673, 11446501405086, 143789611879946, 1806288798172920, 22690641341877163, 285040443527806965 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 3 of A239819

LINKS

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

R. H. Hardin, Empirical recurrence of order 64

FORMULA

Empirical recurrence of order 64 (see link above)

EXAMPLE

Some solutions for n=4

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

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

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

CROSSREFS

Sequence in context: A287837 A276200 A104096 * A087391 A211200 A048553

Adjacent sequences:  A239818 A239819 A239820 * A239822 A239823 A239824

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 27 2014

STATUS

approved

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Last modified November 27 04:21 EST 2020. Contains 338677 sequences. (Running on oeis4.)