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A251398 Number of (n+1) X (4+1) 0..3 arrays with no 2 X 2 subblock having the sum of its diagonal elements less than the absolute difference of its antidiagonal elements. 1
647154, 442476530, 301644677965, 205729518595782, 140311657486510902, 95695193651485137766, 65265944559607354012467, 44512625089074325076093620, 30358463245869796237858714204, 20705053555910102684134541106487 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A251402.
LINKS
EXAMPLE
Some solutions for n=1
..2..1..3..3..0....0..2..3..1..2....2..3..2..2..3....2..2..0..2..1
..0..1..2..0..1....2..1..1..0..2....2..0..0..2..0....0..0..3..1..3
CROSSREFS
Cf. A251402.
Sequence in context: A253405 A034628 A014496 * A057847 A058327 A234160
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 02 2014
STATUS
approved

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Last modified March 29 06:57 EDT 2024. Contains 371265 sequences. (Running on oeis4.)