A222510 Number of 2Xn 0..1 arrays with exactly floor(2Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..1 order

0, 0, 4, 3, 10, 32, 44, 176, 326, 888, 2076, 5275, 12306, 32324, 74284, 195959, 460498, 1189652, 2861016, 7307596, 17774488, 45231012, 110756056, 281073368, 692630902, 1752734824, 4342317676, 10967047059, 27278066490, 68820679380, 171685581996

Offset

1,3

Comments

Row 2 of A222509

Links

R. H. Hardin, Table of n, a(n) for n = 1..123

Example

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

Crossrefs

Sequence in context: A205965 A242391 A241862 * A100492 A072183 A353341

Adjacent sequences: A222507 A222508 A222509 * A222511 A222512 A222513

Keyword

nonn

Author

R. H. Hardin Feb 23 2013

Status

approved