A205998 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two, and every 2X2 determinant nonzero

26, 92, 92, 330, 498, 330, 1184, 2712, 2712, 1184, 4250, 14866, 22612, 14866, 4250, 15252, 81278, 189430, 189430, 81278, 15252, 54738, 445352, 1588523, 2437024, 1588523, 445352, 54738, 196448, 2436706, 13324720, 31326018, 31326018, 13324720

Offset

1,1

Comments

Table starts

.....26.......92.......330........1184..........4250...........15252

.....92......498......2712.......14866.........81278..........445352

....330.....2712.....22612......189430.......1588523........13324720

...1184....14866....189430.....2437024......31326018.......403768668

...4250....81278...1588523....31326018.....619044912.....12247835464

..15252...445352..13324720...403768668...12247835464....372736115952

..54738..2436706.111764603..5195655486..242338696294..11329617750556

.196448.13344256.937463556.66947088104.4795751505632.344896522846756

Links

R. H. Hardin, Table of n, a(n) for n = 1..312

Example

Some solutions for n=4 k=3
..2..0..2..0....1..1..2..1....0..2..1..1....1..2..0..1....1..0..1..0
..2..1..0..1....0..2..1..2....2..1..0..2....2..0..1..0....0..2..2..1
..0..2..1..2....2..0..2..0....1..2..1..0....1..1..2..1....2..1..0..2
..1..0..2..0....0..1..0..1....2..0..2..1....0..2..0..2....0..2..1..0
..2..1..0..2....2..2..1..2....2..1..0..2....1..0..2..0....1..0..2..1

Crossrefs

Sequence in context: A048509 A044213 A044594 * A205991 A259291 A038654

Adjacent sequences: A205995 A205996 A205997 * A205999 A206000 A206001

Keyword

nonn,tabl

Author

R. H. Hardin Feb 02 2012

Status

approved