The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A304927

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

#6 by Wesley Ivan Hurt at Wed Oct 28 19:05:34 EDT 2020

STATUS

editing

approved

#5 by Wesley Ivan Hurt at Wed Oct 28 19:05:30 EDT 2020

NAME

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

STATUS

approved

editing

#4 by R. H. Hardin at Mon May 21 09:21:07 EDT 2018

STATUS

editing

approved

#3 by R. H. Hardin at Mon May 21 09:21:04 EDT 2018

NAME

allocated for R. H. Hardin

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

DATA

1, 5, 13, 73, 452, 2653, 15993, 118024, 920997, 12184613, 162877680, 2507024025, 36984184204, 682363665419

OFFSET

1,2

COMMENTS

Diagonal of A304931.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A304931.

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin, May 21 2018

STATUS

approved

editing

#2 by R. H. Hardin at Mon May 21 09:20:20 EDT 2018

KEYWORD

allocating

allocated

#1 by R. H. Hardin at Mon May 21 09:20:20 EDT 2018

NAME

allocated for R. H. Hardin

KEYWORD

allocating

STATUS

approved