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 A203049 Number of n X n 0..5 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor 0
 1, 286, 1055370, 78243755382, 168179371998322692, 10124772353743869083346802 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A203057 LINKS EXAMPLE Some solutions for n=5 ..2..1..3..2..5....4..3..1..2..2....0..5..3..1..5....3..5..4..2..1 ..3..0..5..4..5....4..5..0..4..5....5..5..1..2..5....3..5..4..3..4 ..3..2..5..5..3....4..5..4..5..5....1..0..5..1..5....2..2..2..1..4 ..2..2..5..0..2....2..4..4..0..1....2..3..5..5..4....3..5..1..0..2 ..2..0..1..2..2....4..4..4..1..0....3..3..4..4..3....3..5..5..1..2 CROSSREFS Sequence in context: A130433 A140926 A295447 * A306788 A259402 A157997 Adjacent sequences: A203046 A203047 A203048 * A203050 A203051 A203052 KEYWORD nonn AUTHOR R. H. Hardin Dec 28 2011 STATUS approved

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Last modified March 31 06:14 EDT 2023. Contains 361634 sequences. (Running on oeis4.)