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A240273 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 or one plus the sum of the elements diagonally to its northwest, modulo 4 1
4, 14, 118, 919, 7562, 64721, 563496, 4956889, 43888821, 390006208, 3473152825, 30971163817, 276395100537, 2467754655037, 22039067141607, 196858997624033, 1758568575970935, 15710437359317486, 140356344121017589 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 3 of A240271

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

CROSSREFS

Sequence in context: A113559 A003184 A065062 * A137048 A137056 A302021

Adjacent sequences:  A240270 A240271 A240272 * A240274 A240275 A240276

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 03 2014

STATUS

approved

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Last modified September 18 04:22 EDT 2021. Contains 347508 sequences. (Running on oeis4.)