A203631 Number of nX1 0..1 arrays with the counts of all possible adjacent horizontal and vertical pair sum values being within one of each other

2, 4, 4, 2, 8, 12, 6, 32, 56, 32, 160, 270, 150, 840, 1512, 882, 4704, 8232, 4704, 26880, 48960, 28800, 158400, 282150, 163350, 943800, 1730300, 1022450, 5725720, 10306296, 6012006, 34978944, 64393056, 38158848, 216233472, 391923168

Offset

1,1

Comments

Column 1 of A203638

Links

R. H. Hardin, Table of n, a(n) for n = 1..625

Example

All solutions for n=5
..0....1....0....0....1....1....1....0
..0....1....0....0....1....0....1....1
..1....0....1....0....1....0....0....1
..1....0....1....1....0....1....0....0
..1....1....0....1....0....1....0....0

Crossrefs

Sequence in context: A099264 A011172 A193028 * A188424 A376122 A220588

Adjacent sequences: A203628 A203629 A203630 * A203632 A203633 A203634

Keyword

nonn

Author

R. H. Hardin Jan 04 2012

Status

approved