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A253728 Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock diagonal maximum minus antidiagonal maximum unequal to its neighbors horizontally and vertically 1
23524, 1076964, 57696638, 3121388776, 161854461064, 8663276276434, 450354383773758, 24027672779181962, 1252290220556546196, 66663348504748366256, 3481436132211993145986, 184985706254787405564169 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A253731
LINKS
EXAMPLE
Some solutions for n=1
..2..1..0..1..0....0..2..2..1..1....2..0..0..2..1....0..0..2..0..2
..1..1..0..0..1....1..0..0..2..0....1..1..0..0..1....0..0..0..1..1
CROSSREFS
Sequence in context: A234441 A253310 A253658 * A227483 A237508 A177827
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 10 2015
STATUS
approved

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Last modified April 14 00:20 EDT 2024. Contains 371652 sequences. (Running on oeis4.)