A251389 Number of (n+1)X(7+1) 0..2 arrays with every 2X2 subblock summing to 2 3 4 5 or 6

19077905, 61210372853, 195833921630923, 627040122137369465, 2007727783867224687619, 6428619222646214779210647, 20584044969991357548445765971, 65908857071343270914359258934351

Offset

1,1

Comments

Column 7 of A251390

Links

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

Example

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

Crossrefs

Sequence in context: A140171 A185854 A073033 * A138025 A184790 A183697

Adjacent sequences: A251386 A251387 A251388 * A251390 A251391 A251392

Keyword

nonn

Author

R. H. Hardin, Dec 01 2014

Status

approved