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A265658 Number of 4Xn arrays containing n copies of 0..4-1 with no equal diagonal or antidiagonal neighbors and new values introduced sequentially from 0. 1
1, 43, 1129, 39913, 1465545, 56069313, 2233380101, 90910542367, 3781693498707, 159766749887717, 6840968180271233, 296179445221357883, 12943965113650046445, 570298650928292714341, 25303264564126389894725 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 4 of A265656.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..18

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A265656.

Sequence in context: A010995 A253915 A288031 * A214100 A229432 A122575

Adjacent sequences:  A265655 A265656 A265657 * A265659 A265660 A265661

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 12 2015

STATUS

approved

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Last modified June 20 00:47 EDT 2019. Contains 324223 sequences. (Running on oeis4.)