A227678 Number of nX5 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X6 binary array having an odd sum, with rows and columns of the latter in lexicographically nondecreasing order

16, 301, 5434, 90884, 1330361, 16795263, 184000783, 1773503344, 15261176700, 118793987740, 845798776106, 5559078678951, 33988369766356, 194559879927981, 1048491460707150, 5344823772801721, 25880047053192859, 119467909882082282

Offset

1,1

Comments

Column 5 of A227679

Links

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

R. H. Hardin, Empirical polynomial of degree 62

Formula

Empirical polynomial of degree 62 (see link above)

Example

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

Crossrefs

Sequence in context: A299750 A300264 A253302 * A252863 A360431 A039746

Adjacent sequences: A227675 A227676 A227677 * A227679 A227680 A227681

Keyword

nonn

Author

R. H. Hardin Jul 19 2013

Status

approved