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 A208405 Number of nX5 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors 1
 51, 41914, 40883360, 40039156736, 39216100214432, 38410047476679936, 37620564383817645696, 36847308431734650845696, 36089946042522268966513152, 35348150537672718536490582016, 34621601954234065647421901637632 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 5 of A208408 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 1008*a(n-1) -28108*a(n-2) +138160*a(n-3) -223680*a(n-4) +168192*a(n-5) -55296*a(n-6) for n>7 EXAMPLE Some solutions for n=4 ..0..0..1..0..2....0..0..0..0..0....0..0..0..1..2....0..0..1..0..0 ..3..1..0..0..1....0..1..0..2..2....3..2..0..1..2....1..1..0..1..0 ..1..1..1..2..2....2..2..3..2..2....1..1..1..0..2....0..1..1..0..2 ..3..0..3..3..0....3..1..1..2..1....1..3..3..1..2....1..2..1..0..3 CROSSREFS Sequence in context: A241117 A255832 A208198 * A208412 A198904 A238567 Adjacent sequences:  A208402 A208403 A208404 * A208406 A208407 A208408 KEYWORD nonn AUTHOR R. H. Hardin Feb 26 2012 STATUS approved

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Last modified October 1 12:48 EDT 2020. Contains 337443 sequences. (Running on oeis4.)