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A302732 Number of 7Xn 0..1 arrays with every element equal to 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
0, 421, 4064, 3316, 17828, 104969, 532511, 1932168, 7608792, 40495097, 193959222, 806044112, 3571553560, 16732139668, 77717205902, 345532208087, 1548242747664, 7108827463856, 32520170426142, 146833013273650, 664181788383321 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 7 of A302728.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

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

CROSSREFS

Cf. A302728.

Sequence in context: A340157 A302284 A353045 * A251198 A302533 A303414

Adjacent sequences:  A302729 A302730 A302731 * A302733 A302734 A302735

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 12 2018

STATUS

approved

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Last modified May 20 10:33 EDT 2022. Contains 353871 sequences. (Running on oeis4.)