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A253657 Number of (n+1)X(3+1) 0..2 arrays with every 2X2 subblock diagonal maximum minus antidiagonal maximum unequal to its neighbors horizontally, vertically and nw-se diagonally 1
3550, 25062, 241548, 2113406, 17719343, 152352910, 1302707432, 11094507660, 94827318012, 808751503976, 6903022252385, 58900473067302, 502630468746850, 4288654203577526, 36596735470949736, 312258842250198756 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 3 of A253662
LINKS
EXAMPLE
Some solutions for n=2
..2..2..0..1....1..2..1..0....0..0..2..0....0..0..1..2....2..2..0..0
..1..0..1..1....2..0..1..1....0..2..0..2....0..2..0..1....0..1..2..0
..2..1..2..0....1..2..2..0....0..1..0..2....1..1..2..2....1..2..0..1
CROSSREFS
Sequence in context: A220985 A252989 A253309 * A251040 A253727 A218815
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 07 2015
STATUS
approved

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Last modified February 21 15:59 EST 2024. Contains 370237 sequences. (Running on oeis4.)