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”).

A295936
Number of n X n 0..1 arrays with each 1 adjacent to 1 or 3 king-move neighboring 1's.
0
1, 8, 41, 534, 29081, 1806751, 279143247, 117889600265, 88388227122806, 148870684494729283, 583554206857942919950
OFFSET
1,2
COMMENTS
Diagonal of A295943.
EXAMPLE
Some solutions for n=5
..1..0..0..0..0. .0..1..0..0..0. .0..0..0..1..1. .0..0..0..1..1
..1..0..0..0..0. .0..1..0..1..1. .0..1..0..0..0. .0..0..0..0..0
..0..0..0..0..1. .1..1..0..0..0. .0..0..1..0..0. .1..0..0..0..1
..0..1..0..1..0. .1..0..0..0..0. .0..0..1..1..1. .1..0..1..1..0
..1..0..0..0..0. .0..1..0..1..1. .0..1..0..0..0. .0..0..0..0..1
CROSSREFS
Cf. A295943.
Sequence in context: A304466 A228480 A067301 * A352397 A204572 A374915
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 30 2017
STATUS
approved