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A298140 Number of n X n 0..1 arrays with every element equal to 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero. 0
0, 1, 0, 8, 34, 92, 180, 1404, 4288, 29092, 125384, 859423, 4746446, 33970899, 232212614 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,4
COMMENTS
Diagonal of A298146.
LINKS
EXAMPLE
Some solutions for n=7
..0..0..0..0..0..0..0. .0..0..1..1..1..1..1. .0..0..1..1..1..1..1
..0..1..1..1..1..1..0. .0..1..0..0..0..0..1. .0..1..0..0..0..0..1
..1..0..0..0..0..0..1. .0..1..1..1..1..1..0. .0..1..1..1..1..1..0
..1..1..1..1..1..1..1. .1..0..0..0..0..0..1. .1..0..0..0..0..0..1
..0..0..0..0..0..0..0. .0..1..1..1..1..1..0. .0..1..1..1..1..1..0
..0..1..1..0..1..1..0. .1..0..0..0..0..0..1. .0..0..1..0..0..0..1
..1..1..0..0..0..1..1. .1..1..1..1..1..1..1. .0..1..1..1..0..1..1
CROSSREFS
Cf. A298146.
Sequence in context: A212744 A298174 A249743 * A301887 A208639 A240785
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 13 2018
STATUS
approved

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)