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 A239850 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 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, 44, 203, 4549, 176208, 9885999, 14757679494 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A239858 LINKS Table of n, a(n) for n=1..8. EXAMPLE Some solutions for n=4 ..3..2..3..3....2..3..3..2....2..3..3..2....2..3..3..2....2..3..3..2 ..2..1..2..2....3..1..1..3....3..1..1..3....3..1..1..3....3..1..2..3 ..3..0..0..2....3..1..2..0....3..1..2..0....3..1..1..3....2..3..2..0 ..3..2..2..0....2..3..3..3....2..3..0..3....3..2..3..3....2..1..2..3 CROSSREFS Sequence in context: A356565 A255969 A329945 * A354613 A355842 A100443 Adjacent sequences: A239847 A239848 A239849 * A239851 A239852 A239853 KEYWORD nonn AUTHOR R. H. Hardin, Mar 28 2014 STATUS approved

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Last modified April 23 16:40 EDT 2024. Contains 371916 sequences. (Running on oeis4.)