A222497 Number of nX5 0..3 arrays with exactly floor(nX5/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order

4, 14, 81, 3915, 52190, 2793098, 48860520, 3227092882, 57081799730, 3915919248062, 68267995937433, 4787071700372358, 82404257722169702, 5850663181925314192, 99909916407510735481, 7147096049853937484320

Offset

1,1

Comments

Column 5 of A222500

Links

R. H. Hardin, Table of n, a(n) for n = 1..34

Example

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

Crossrefs

Sequence in context: A003707 A355950 A063862 * A327355 A356508 A024421

Adjacent sequences: A222494 A222495 A222496 * A222498 A222499 A222500

Keyword

nonn

Author

R. H. Hardin Feb 23 2013

Status

approved