A209846 Number of (n+1)X7 0..3 arrays with every 2X2 subblock having one or two distinct values, and new values 0..3 introduced in row major order

50987, 8743851, 1569132907, 299013108267, 57996585929227, 11360964645748987, 2236023641962912731, 441217186235837857275, 87185885989797413867867, 17242469799670707579743515, 3411677740542012016899044731

Offset

1,1

Comments

Column 6 of A209848

Links

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

Example

Some solutions for n=4
..0..0..0..1..0..1..2....0..0..1..1..0..0..1....0..0..1..0..0..0..2
..2..0..0..0..0..1..1....0..1..0..0..0..1..0....2..0..0..1..0..2..0
..2..2..2..2..0..1..0....1..1..0..1..0..0..0....2..2..0..1..0..0..2
..0..2..3..2..0..1..1....0..1..0..1..1..1..0....2..2..0..1..0..0..2
..0..2..2..2..0..0..1....0..1..0..0..0..0..0....0..2..0..0..0..0..0

Crossrefs

Sequence in context: A185379 A204729 A277344 * A237222 A178283 A252207

Adjacent sequences: A209843 A209844 A209845 * A209847 A209848 A209849

Keyword

nonn

Author

R. H. Hardin Mar 14 2012

Status

approved