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A251217
Number of (n+1)X(6+1) 0..1 arrays with no 2X2 subblock having zero or two 1s
1
631, 5569, 50912, 502971, 4907873, 48781920, 482274751, 4791965557, 47523048960, 471984045011, 4684560331885, 46516009269268, 461786651683295, 4585017470092103, 45520667522670878, 451955910904080413
OFFSET
1,1
COMMENTS
Column 6 of A251219
FORMULA
Empirical recurrence of order 62 (see link above)
EXAMPLE
Some solutions for n=3
..0..1..0..1..0..1..1....0..1..1..0..1..1..1....1..0..1..1..1..1..0
..1..1..1..1..1..1..1....1..1..1..1..1..1..1....1..1..1..0..1..1..1
..1..0..1..1..1..1..0....1..1..0..1..1..0..1....0..1..1..1..1..1..0
..1..1..1..1..1..0..0....1..0..0..0..1..1..1....1..1..1..0..1..1..1
CROSSREFS
Sequence in context: A105305 A252412 A002227 * A139066 A345557 A345811
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 30 2014
STATUS
approved