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A222574 Number of 2Xn 0..2 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..2 order 1
2, 1, 5, 10, 25, 128, 292, 1318, 3640, 14788, 42332, 172442, 496654, 2013238, 5919842, 23613110, 70986662, 279047430, 854262098, 3317468446, 10317918394, 39625082182, 125013898578, 475235749926, 1518534868610, 5720236047374 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 2 of A222573

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..65

EXAMPLE

All solutions for n=3

..0..0..0....0..0..1....0..0..0....0..0..0....0..1..1

..0..0..1....0..0..0....0..0..0....1..0..0....1..1..1

CROSSREFS

Sequence in context: A226309 A226311 A049948 * A222680 A110352 A107310

Adjacent sequences:  A222571 A222572 A222573 * A222575 A222576 A222577

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 25 2013

STATUS

approved

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Last modified October 15 22:25 EDT 2019. Contains 328038 sequences. (Running on oeis4.)