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A300887 Number of nX7 0..1 arrays with every element equal to 0, 1, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
21, 11, 148, 1822, 31867, 437276, 6236246, 88486037, 1253495751, 17820280071, 252432128095, 3581335862055, 50810347370710, 720844568426583, 10226876364949089, 145096143960674291, 2058575118040453456 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A300888.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A300888.

Sequence in context: A114011 A300943 A270790 * A301497 A258083 A260527

Adjacent sequences:  A300884 A300885 A300886 * A300888 A300889 A300890

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 14 2018

STATUS

approved

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Last modified October 19 03:15 EDT 2019. Contains 328211 sequences. (Running on oeis4.)