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 A240040 Number of n X n 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of the elements above it or zero 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, 4, 26, 346, 7514, 640643, 104619164, 49892724623 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A240046 LINKS EXAMPLE Some solutions for n=3 ..2..3..2....2..3..2....2..3..2....3..2..2....2..3..3....2..3..3....2..3..2 ..1..0..0....3..0..0....1..0..0....1..0..3....3..1..2....3..1..2....3..0..0 ..1..2..0....2..0..3....1..0..3....2..3..2....3..2..2....3..1..2....2..0..0 CROSSREFS Sequence in context: A032076 A182146 A218077 * A088888 A102996 A189896 Adjacent sequences:  A240037 A240038 A240039 * A240041 A240042 A240043 KEYWORD nonn AUTHOR R. H. Hardin, Mar 31 2014 STATUS approved

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Last modified January 18 06:42 EST 2022. Contains 350452 sequences. (Running on oeis4.)