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A269079 Number of 5Xn binary arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two not more than once. 1
32, 244, 2343, 20400, 165607, 1383105, 10778640, 86308622, 661641931, 5146079168, 39031235709, 297777942033, 2239241624640, 16861326990168, 125878250277823, 939067269600080, 6967653661432115, 51619835791134129, 381021973991495280 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 5 of A269075.

LINKS

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

FORMULA

Empirical: a(n) = 8*a(n-1) +52*a(n-2) -424*a(n-3) -816*a(n-4) +6756*a(n-5) +1362*a(n-6) -38476*a(n-7) +19016*a(n-8) +82920*a(n-9) -70008*a(n-10) -50556*a(n-11) +50607*a(n-12) +9180*a(n-13) -10404*a(n-14)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Cf. A269075.

Sequence in context: A226098 A096960 A231304 * A134846 A066392 A300565

Adjacent sequences:  A269076 A269077 A269078 * A269080 A269081 A269082

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 19 2016

STATUS

approved

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Last modified October 20 10:45 EDT 2019. Contains 328257 sequences. (Running on oeis4.)