A205247 Number of (n+1)X(n+1) 0..1 arrays with the number of clockwise edge increases in every 2X2 subblock the same

16, 168, 5212, 387328, 67731268, 27913330476, 27149753088796, 62383316832685352, 338853014329060508764, 4353185098169744392741452, 132316928041105714306034574484, 9518293354852895518368238072987356

Offset

1,1

Comments

Diagonal of A205255

Links

R. H. Hardin, Table of n, a(n) for n = 1..14

Example

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

Crossrefs

Sequence in context: A021744 A025445 A022740 * A067713 A017210 A283574

Adjacent sequences: A205244 A205245 A205246 * A205248 A205249 A205250

Keyword

nonn

Author

R. H. Hardin Jan 24 2012

Status

approved