login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A283345
Number of n X 6 0..1 arrays with no 1 equal to more than two of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element.
1
0, 524, 31952, 1354928, 55886238, 2154364298, 80410575348, 2929763437610, 104800502322828, 3696480908283518, 128919009927187184, 4455002512552726172, 152774976444888401656, 5205282343917202524418, 176371344866788221523942
OFFSET
1,2
COMMENTS
Column 6 of A283347.
LINKS
EXAMPLE
Some solutions for n=3
..1..0..1..1..0..0. .1..0..1..0..0..1. .1..1..1..0..0..1. .0..1..0..0..1..0
..1..1..0..1..1..1. .0..1..0..0..1..1. .1..0..0..0..0..1. .0..1..0..0..1..1
..0..1..0..0..0..0. .0..0..1..0..0..1. .0..0..0..0..0..0. .1..0..1..0..1..0
CROSSREFS
Cf. A283347.
Sequence in context: A045209 A074889 A249286 * A125012 A281549 A308242
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 05 2017
STATUS
approved