A238253 Number of (n+1)X(6+1) 0..1 arrays with 2X2 subblock sums lexicographically nondecreasing columnwise and rowwise

1482, 29995, 1473792, 65450601, 3320993180, 128727296869, 5017308028639, 154350327958339, 4704917436206270, 118251124084419007, 2946366157111042290, 62617673607295964138, 1321308517824396221455, 24384005345308756975149

Offset

1,1

Comments

Column 6 of A238255

Links

R. H. Hardin, Table of n, a(n) for n = 1..31

Example

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

Crossrefs

Sequence in context: A253324 A204037 A235411 * A035864 A255087 A137365

Adjacent sequences: A238250 A238251 A238252 * A238254 A238255 A238256

Keyword

nonn

Author

R. H. Hardin, Feb 21 2014

Status

approved