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A298842 Number of n X n 0..1 arrays with every element equal to 1, 2, 3, 6 or 8 king-move adjacent elements, with upper left element zero. 0
0, 4, 48, 466, 5101, 74685, 1276034, 30242236, 1056423010, 50039513246, 3406811335705, 353276120560238, 52792202092264104 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A298846.

LINKS

Table of n, a(n) for n=1..13.

EXAMPLE

Some solutions for n=6

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

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

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

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

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

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

CROSSREFS

Cf. A298846.

Sequence in context: A059409 A297816 A297987 * A298649 A299603 A026942

Adjacent sequences:  A298839 A298840 A298841 * A298843 A298844 A298845

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 27 2018

STATUS

approved

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Last modified May 26 04:43 EDT 2022. Contains 354074 sequences. (Running on oeis4.)