A254555 Number of (3+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally

12260, 39661, 129677, 388056, 1194944, 3557566, 10792398, 31935630, 94243724, 273661647, 792918304, 2285081398, 6585392329, 18959530683, 54620617680, 157367672295, 453569621698, 1307460827102, 3769569531795, 10868903441473

Offset

1,1

Comments

Row 3 of A254553

Links

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

Example

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

Crossrefs

Sequence in context: A252500 A252497 A254548 * A254478 A186046 A358320

Adjacent sequences: A254552 A254553 A254554 * A254556 A254557 A254558

Keyword

nonn

Author

R. H. Hardin, Feb 01 2015

Status

approved