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 A237503 Number of (n+1)X(n+1) 0..2 arrays with the maximum plus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 0
 81, 1724, 62031, 4882448, 785179913, 198237517632, 88843850463838, 85602787661410966 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A237511 LINKS Table of n, a(n) for n=1..8. EXAMPLE Some solutions for n=3 ..2..0..1..2....0..0..2..0....2..0..0..2....0..1..0..1....0..1..1..2 ..0..1..1..0....1..1..0..0....1..1..1..0....2..2..0..1....0..2..1..0 ..1..1..1..0....0..2..2..1....2..1..1..0....2..1..2..1....1..2..1..0 ..1..1..2..0....1..2..1..1....1..0..0..0....1..1..2..0....2..2..0..2 CROSSREFS Sequence in context: A107914 A050634 A065791 * A268974 A206677 A237091 Adjacent sequences: A237500 A237501 A237502 * A237504 A237505 A237506 KEYWORD nonn AUTHOR R. H. Hardin, Feb 08 2014 STATUS approved

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Last modified June 19 13:19 EDT 2024. Contains 373503 sequences. (Running on oeis4.)