login
A297462
Number of 6Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0 or 2 neighboring 1s.
1
64, 299, 6888, 55713, 862112, 8800153, 116817805, 1310421193, 16359022199, 190745746116, 2322860397083, 27514222405770, 331710789850250, 3954342819972111, 47479319283362042, 567478249014805267
OFFSET
1,1
COMMENTS
Row 6 of A297457.
FORMULA
Empirical recurrence of order 72 (see link above)
EXAMPLE
Some solutions for n=4
..0..0..0..1. .1..0..0..1. .1..0..0..0. .1..0..0..0. .0..0..1..0
..1..0..0..1. .0..0..0..0. .1..0..0..0. .0..0..0..0. .1..0..0..0
..0..0..0..1. .1..1..1..0. .1..0..0..0. .0..0..0..1. .1..0..0..0
..0..0..0..1. .0..1..0..0. .0..0..1..0. .0..0..0..0. .0..0..0..0
..0..1..0..1. .0..0..0..0. .0..0..0..0. .0..1..1..0. .1..1..0..0
..0..1..0..0. .0..0..1..0. .1..0..1..0. .0..1..1..0. .0..1..1..0
CROSSREFS
Cf. A297457.
Sequence in context: A218069 A017258 A366817 * A297699 A297888 A298493
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 30 2017
STATUS
approved