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”).

A295982
Number of nX5 0..1 arrays with each 1 adjacent to 2 or 3 king-move neighboring 1s.
1
1, 90, 581, 3851, 62702, 649470, 6388097, 74040837, 809517928, 8644829320, 95041783912, 1038841307344, 11282589439523, 123121658373135, 1343340780019400, 14636132302489723, 159576990920418926
OFFSET
1,2
COMMENTS
Column 5 of A295985.
FORMULA
Empirical recurrence of order 67 (see link above)
EXAMPLE
Some solutions for n=5
..0..1..1..0..1. .0..0..1..1..0. .1..1..0..1..0. .1..1..0..1..1
..1..0..0..1..1. .1..1..0..1..1. .1..0..1..1..0. .1..0..0..0..1
..0..1..0..0..0. .1..0..0..0..0. .1..0..0..0..0. .0..0..0..0..0
..1..0..1..1..1. .0..1..1..1..0. .1..1..0..0..0. .0..1..1..1..1
..1..1..0..0..1. .0..0..0..1..1. .1..0..0..0..0. .0..1..0..0..1
CROSSREFS
Cf. A295985.
Sequence in context: A211446 A203787 A203780 * A367093 A065949 A224541
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 01 2017
STATUS
approved