The On-Line Encyclopedia of Integer Sequences (OEIS)

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A293099

Number of n X 7 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1.
(history; published version)

#6 by Wesley Ivan Hurt at Sun Apr 05 23:48:25 EDT 2020

STATUS

editing

approved

#5 by Wesley Ivan Hurt at Sun Apr 05 23:48:13 EDT 2020

NAME

Number of nX7 n X 7 0..1 arrays with the number of 1s 1's horizontally, diagonally or antidiagonally adjacent to some 0 two less than the number of 0s 0's adjacent to some 1.

STATUS

approved

editing

#4 by R. H. Hardin at Sat Sep 30 13:21:47 EDT 2017

STATUS

editing

approved

#3 by R. H. Hardin at Sat Sep 30 13:21:43 EDT 2017

LINKS

R. H. Hardin, <a href="/A293099/b293099.txt">Table of n, a(n) for n = 1..25</a>

#2 by R. H. Hardin at Sat Sep 30 13:21:27 EDT 2017

NAME

allocated for R. H. Hardin

Number of nX7 0..1 arrays with the number of 1s horizontally, diagonally or antidiagonally adjacent to some 0 two less than the number of 0s adjacent to some 1.

DATA

3, 2220, 205195, 24773296, 2728695681, 328979478088, 38469698642410, 4665971856266714, 560706154294046909, 68470475134869958112, 8347937003432022928553, 1025774531240519319091628

OFFSET

1,1

COMMENTS

Column 7 of A293100.

EXAMPLE

Some solutions for n=2

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

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

CROSSREFS

Cf. A293100.

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin, Sep 30 2017

STATUS

approved

editing

#1 by R. H. Hardin at Sat Sep 30 13:11:08 EDT 2017

NAME

allocated for R. H. Hardin

KEYWORD

allocated

STATUS

approved