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A293101 Number of 2 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1. 1
0, 0, 9, 42, 150, 596, 2220, 8376, 31959, 121768, 465365, 1784742, 6865278, 26474028, 102325886, 396332796, 1538015240, 5978805044, 23278677150, 90767915948, 354389747119, 1385333740384, 5421345875519, 21237273165782, 83270840712919 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Row 2 of A293100.

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

CROSSREFS

Cf. A293100.

Sequence in context: A051923 A180670 A268262 * A084899 A268622 A289364

Adjacent sequences:  A293098 A293099 A293100 * A293102 A293103 A293104

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 30 2017

STATUS

approved

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Last modified May 26 17:16 EDT 2022. Contains 354092 sequences. (Running on oeis4.)