The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A298086 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing all changes.

A298086

Number of nX7 0..1 arrays with every element equal to 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero.
(history; published version)

#4 by R. H. Hardin at Fri Jan 12 09:01:56 EST 2018

STATUS

editing

approved

#3 by R. H. Hardin at Fri Jan 12 09:01:48 EST 2018

LINKS

R. H. Hardin, <a href="/A298086/b298086.txt">Table of n, a(n) for n = 1..210</a>

#2 by R. H. Hardin at Fri Jan 12 09:01:33 EST 2018

NAME

allocated for R. H. Hardin

Number of nX7 0..1 arrays with every element equal to 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero.

DATA

0, 34, 18, 213, 1574, 11202, 65218, 479206, 3481050, 24695892, 177272585, 1292781132, 9346339114, 67597407637, 490930663188, 3562917786488, 25842902976432, 187580825378770, 1361838171557890, 9885195460409937

OFFSET

1,2

COMMENTS

Column 7 of A298087.

EXAMPLE

Some solutions for n=7

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

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

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

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

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

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

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

CROSSREFS

Cf. A298087.

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin, Jan 12 2018

STATUS

approved

editing

#1 by R. H. Hardin at Fri Jan 12 08:56:49 EST 2018

NAME

allocated for R. H. Hardin

KEYWORD

allocated

STATUS

approved