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 A237553 Number of (n+1)X(4+1) 0..2 arrays with the maximum minus the upper median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 1
 4752, 44668, 343356, 3207808, 31949604, 343405228, 3451915208, 35706407872, 366179841668, 3961978247404, 40254023599420, 416899486720746, 4287479200890220, 46169383245256136, 470989649165202440 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A237557 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 R. H. Hardin, Empirical recurrence of order 90 FORMULA Empirical recurrence of order 90 (see link above) EXAMPLE Some solutions for n=2 ..1..0..0..2..0....1..0..0..2..1....0..2..2..1..0....0..2..1..1..2 ..2..1..1..0..2....0..1..0..0..1....1..1..0..0..1....1..1..2..0..2 ..1..2..1..0..1....2..1..0..1..1....0..0..2..2..1....1..1..0..0..1 CROSSREFS Sequence in context: A374502 A083637 A083638 * A250467 A183267 A258231 Adjacent sequences: A237550 A237551 A237552 * A237554 A237555 A237556 KEYWORD nonn AUTHOR R. H. Hardin, Feb 09 2014 STATUS approved

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Last modified July 15 12:56 EDT 2024. Contains 374332 sequences. (Running on oeis4.)