The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A303329

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Number of 7Xn 0..1 arrays with every element equal to 0, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
(history; published version)

#4 by R. H. Hardin at Sat Apr 21 13:16:36 EDT 2018

STATUS

editing

approved

#3 by R. H. Hardin at Sat Apr 21 13:16:33 EDT 2018

LINKS

R. H. Hardin, <a href="/A303329/b303329.txt">Table of n, a(n) for n = 1..210</a>

#2 by R. H. Hardin at Sat Apr 21 13:16:19 EDT 2018

NAME

allocated for R. H. Hardin

Number of 7Xn 0..1 arrays with every element equal to 0, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

DATA

64, 1, 64, 3, 204, 136, 2956, 3929, 69328, 130531, 2005898, 4227664, 61153964, 138433606, 1895471346, 4533018431, 59124000419, 148573817239, 1850543645961, 4870321182842, 58066023583621, 159666967568560, 1825934714066510

OFFSET

1,1

COMMENTS

Row 7 of A303325.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

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

CROSSREFS

Cf. A303325.

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin, Apr 21 2018

STATUS

approved

editing

#1 by R. H. Hardin at Sat Apr 21 13:06:42 EDT 2018

NAME

allocated for R. H. Hardin

KEYWORD

allocated

STATUS

approved