A251257 Number of (n+1)X(7+1) 0..1 arrays with every 2X2 subblock having a single 1 or two 1s on the same edge

850, 10108, 69270, 836546, 6080510, 71459218, 539961360, 6151714502, 47962536500, 531311887046, 4253113770276, 45982917729368, 376446763366200, 3985975267619006, 33263747474025152, 345977830407359282

Offset

1,1

Comments

Column 7 of A251258

Links

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

R. H. Hardin, Empirical recurrence of order 49

Formula

Empirical recurrence of order 49 (see link above)

Example

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

Crossrefs

Sequence in context: A268112 A194618 A252546 * A372114 A252276 A237762

Adjacent sequences: A251254 A251255 A251256 * A251258 A251259 A251260

Keyword

nonn

Author

R. H. Hardin, Dec 01 2014

Status

approved