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A239248 Number of n X n 0..4 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it, modulo 5 0
4, 142, 47066, 160787652, 5651220281864, 2031453416998054930, 7475436982938232742147042, 281737508349215799258494615824100 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A239256

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=3

..0..4..3....3..2..4....0..4..2....0..2..0....2..4..4....0..0..0....2..0..2

..0..3..3....0..4..4....0..2..1....0..4..3....2..1..2....3..2..3....2..4..4

..2..0..0....0..4..3....0..3..0....3..3..3....2..0..0....2..0..1....3..3..1

CROSSREFS

Sequence in context: A293752 A299833 A231949 * A225133 A122422 A307703

Adjacent sequences: A239245 A239246 A239247 * A239249 A239250 A239251

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 13 2014

STATUS

approved

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Last modified March 24 11:39 EDT 2023. Contains 361479 sequences. (Running on oeis4.)