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A285146 Number of n X 2 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1. 1
0, 2, 12, 56, 236, 950, 3752, 14684, 57192, 222308, 863808, 3357766, 13061980, 50859826, 198235896, 773453896, 3020781528, 11809145656, 46207264696, 180955506800, 709219185000, 2781727573396, 10918267462160, 42882371536718 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 2 of A285152.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A285152.

Sequence in context: A304194 A124723 A122229 * A127216 A006659 A194771

Adjacent sequences:  A285143 A285144 A285145 * A285147 A285148 A285149

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 12 2017

STATUS

approved

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Last modified January 23 21:44 EST 2022. Contains 350515 sequences. (Running on oeis4.)