A223014 Number of 3Xn 0..1 arrays with no more than floor(3Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order

4, 10, 24, 117, 284, 1673, 4429, 26552, 72934, 442065, 1235006, 7532763, 21256771, 130255369, 370176224, 2276294040, 6503070384, 40098304454, 115024311048, 710794645074, 2045650165772, 12663624563666, 36543679573017

Offset

1,1

Comments

Row 3 of A223012

Links

R. H. Hardin, Table of n, a(n) for n = 1..48

Example

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

Crossrefs

Sequence in context: A366645 A001868 A217696 * A038783 A127070 A365861

Adjacent sequences: A223011 A223012 A223013 * A223015 A223016 A223017

Keyword

nonn

Author

R. H. Hardin Mar 11 2013

Status

approved