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

4752, 44668, 343356, 3207808, 31949604, 343405228, 3451915208, 35706407872, 366179841668, 3961978247404, 40254023599420, 416899486720746, 4287479200890220, 46169383245256136, 470989649165202440

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: A252204 A083637 A083638 * A250467 A183267 A258231

Adjacent sequences: A237550 A237551 A237552 * A237554 A237555 A237556

Keyword

nonn

Author

R. H. Hardin, Feb 09 2014

Status

approved