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A254848 Number of (n+2)X(2+2) 0..1 arrays with no 3x3 subblock diagonal sum one and no antidiagonal sum two 1
576, 1369, 2916, 6889, 16900, 42436, 103684, 250000, 595984, 1447209, 3541924, 8761600, 21399876, 52186176, 126067984, 306915361, 746710276, 1830556225, 4462774416, 10904371776, 26485609536, 64593747409, 157115518884 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 2 of A254854
LINKS
EXAMPLE
Some solutions for n=4
..0..1..1..0....1..0..0..0....1..1..1..1....0..0..0..1....1..0..0..0
..1..0..0..1....0..1..1..0....1..1..1..1....0..0..0..0....0..1..0..1
..0..1..0..1....0..0..1..1....1..1..0..0....1..0..0..0....0..0..0..0
..0..0..0..0....0..0..0..0....1..0..0..1....1..1..0..0....1..0..0..1
..0..0..0..1....0..0..0..0....1..1..1..1....0..1..0..0....0..1..0..0
..0..0..0..0....0..0..0..0....0..1..1..1....0..1..1..1....0..0..1..0
CROSSREFS
Sequence in context: A064253 A069266 A060678 * A235181 A268773 A250789
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 08 2015
STATUS
approved

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Last modified July 18 01:34 EDT 2024. Contains 374377 sequences. (Running on oeis4.)