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A239360 Number of nX7 0..2 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 3 1
8, 22, 46, 96, 218, 409, 729, 1154, 1742, 2550, 3625, 5080, 6985, 9338, 12170, 15509, 19408, 23914, 29068, 34912, 41488, 48838, 57004, 66028, 75952, 86818, 98668, 111544, 125488, 140542, 156748, 174148, 192784, 212698, 233932, 256528, 280528 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A239361

LINKS

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

FORMULA

Empirical: a(n) = 7*n^3 - 54*n^2 - 37*n + 1252 for n>16

EXAMPLE

Some solutions for n=3

..2..2..0..0..0..0..0....0..0..0..0..0..0..0....0..0..0..0..0..2..2

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

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

CROSSREFS

Sequence in context: A145067 A112684 A189584 * A211532 A269429 A305181

Adjacent sequences:  A239357 A239358 A239359 * A239361 A239362 A239363

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 17 2014

STATUS

approved

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Last modified December 6 01:25 EST 2021. Contains 349558 sequences. (Running on oeis4.)