The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A305770 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A305770

Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.
(history; published version)

#4 by R. H. Hardin at Sun Jun 10 09:39:22 EDT 2018

STATUS

editing

approved

#3 by R. H. Hardin at Sun Jun 10 09:39:19 EDT 2018

NAME

allocated for R. H. Hardin

Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.

DATA

1, 8, 81, 1481, 51586, 3492739, 453853629, 113299205109, 54481875961523

OFFSET

1,2

COMMENTS

Diagonal of A305776.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A305776.

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin, Jun 10 2018

STATUS

approved

editing

#2 by R. H. Hardin at Sun Jun 10 09:38:20 EDT 2018

KEYWORD

allocating

allocated

#1 by R. H. Hardin at Sun Jun 10 09:38:20 EDT 2018

NAME

allocated for R. H. Hardin

KEYWORD

allocating

STATUS

approved