A222542 Number of 2Xn 0..1 arrays with no more than floor(2Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..1 order

2, 1, 5, 8, 19, 54, 104, 294, 665, 1653, 3999, 9931, 23922, 60440, 145456, 367778, 895971, 2252812, 5539668, 13906403, 34364667, 86296674, 214005020, 537481517, 1337290024, 3358607279, 8379217095, 21048882131, 52624535726, 132246784124

Offset

1,1

Comments

Row 2 of A222541

Links

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

Example

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

Crossrefs

Sequence in context: A201743 A167816 A316292 * A318052 A026078 A349635

Adjacent sequences: A222539 A222540 A222541 * A222543 A222544 A222545

Keyword

nonn

Author

R. H. Hardin Feb 24 2013

Status

approved