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A305683 Number of nX6 0..1 arrays with every element unequal to 0, 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero. 1
1, 272, 4869, 207116, 8417922, 351440611, 14724197226, 618597002816, 26011056462909, 1094170226062256, 46034445802982048, 1936912759209935324, 81498459201261039711, 3429207685634735798470, 144291337042712251135250 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 6 of A305685.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A305685.

Sequence in context: A302899 A266106 A264077 * A317063 A316930 A317701

Adjacent sequences:  A305680 A305681 A305682 * A305684 A305685 A305686

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jun 08 2018

STATUS

approved

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Last modified August 9 06:47 EDT 2022. Contains 356018 sequences. (Running on oeis4.)