A251217 Number of (n+1)X(6+1) 0..1 arrays with no 2X2 subblock having zero or two 1s

631, 5569, 50912, 502971, 4907873, 48781920, 482274751, 4791965557, 47523048960, 471984045011, 4684560331885, 46516009269268, 461786651683295, 4585017470092103, 45520667522670878, 451955910904080413

Offset

1,1

Comments

Column 6 of A251219

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 62

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

Adjacent sequences: A251214 A251215 A251216 * A251218 A251219 A251220

Keyword

nonn

Author

R. H. Hardin, Nov 30 2014

Status

approved