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A302385
Number of 6Xn 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
1
0, 361, 16451, 514655, 20993054, 849467774, 34271733937, 1383359844850, 55869034107773, 2256277862917399, 91119808168300632, 3679882775189443109, 148612776964178660961, 6001755395115442008533, 242382043501326104374522
OFFSET
1,2
COMMENTS
Row 6 of A302381.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..1..0. .0..0..0..1..0. .0..0..0..0..0. .0..0..0..0..0
..1..0..0..0..1. .1..0..0..0..1. .1..0..0..0..1. .1..0..0..0..1
..0..1..1..0..1. .0..1..1..0..0. .0..1..1..1..0. .1..1..0..1..1
..0..0..1..1..0. .1..0..0..0..0. .0..0..1..1..0. .0..1..0..0..1
..1..1..0..1..1. .1..1..1..1..1. .1..1..0..0..1. .1..0..1..0..1
..0..0..1..0..1. .1..0..0..1..1. .0..0..1..1..1. .0..0..0..1..0
CROSSREFS
Cf. A302381.
Sequence in context: A253675 A206249 A231996 * A303106 A186869 A185612
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 06 2018
STATUS
approved