The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A318428

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Number of nX6 0..1 arrays with every element unequal to 1, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
(history; published version)

#4 by R. H. Hardin at Sun Aug 26 11:23:15 EDT 2018

STATUS

editing

approved

#3 by R. H. Hardin at Sun Aug 26 11:23:12 EDT 2018

LINKS

R. H. Hardin, <a href="/A318428/b318428.txt">Table of n, a(n) for n = 1..210</a>

#2 by R. H. Hardin at Sun Aug 26 11:22:55 EDT 2018

NAME

allocated for R. H. Hardin

Number of nX6 0..1 arrays with every element unequal to 1, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

DATA

5, 511, 1353, 20016, 132039, 1216538, 9600648, 81327718, 665822482, 5547964642, 45869504563, 380741848431, 3154908484252, 26163271819169, 216899879798735, 1798367150917047, 14910277331599425, 123621215328946695

OFFSET

1,1

COMMENTS

Column 6 of A318430.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A318430.

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin, Aug 26 2018

STATUS

approved

editing

#1 by R. H. Hardin at Sun Aug 26 11:19:31 EDT 2018

NAME

allocated for R. H. Hardin

KEYWORD

allocated

STATUS

approved