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 A241277 Number of n X n 0..3 arrays with no element equal to one plus the sum of elements to its left or zero plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4 0
 2, 3, 41, 773, 20717, 15616828, 2949336562 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A241283 LINKS EXAMPLE Some solutions for n=4 ..3..3..2..3....3..2..3..3....3..3..2..3....3..2..3..3....3..2..3..3 ..2..1..3..2....2..1..1..2....2..1..3..2....2..1..1..2....0..3..1..2 ..2..2..2..0....2..0..2..3....3..2..0..0....0..2..2..2....2..0..1..3 ..2..0..0..0....2..0..1..2....2..1..2..3....2..2..0..0....0..2..2..2 CROSSREFS Sequence in context: A094714 A200817 A042475 * A123993 A271331 A101821 Adjacent sequences:  A241274 A241275 A241276 * A241278 A241279 A241280 KEYWORD nonn AUTHOR R. H. Hardin, Apr 18 2014 STATUS approved

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Last modified June 4 01:24 EDT 2020. Contains 334808 sequences. (Running on oeis4.)