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A253043 Number of (n+2)X(7+2) 0..3 arrays with every consecutive three elements in every row, column, diagonal and antidiagonal having exactly two distinct values, and new values 0 upwards introduced in row major order 1
65765, 18180, 25184, 51292, 116466, 262728, 620736, 1399406, 3180688, 7274744, 16952678, 38766416, 88375402, 204157530, 467852370, 1079248186, 2467421138, 5696126304, 12988579062, 30127289430, 68617375036, 158672004024 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A253044
LINKS
EXAMPLE
Some solutions for n=3
..0..1..1..2..1..2..2..3..3....0..1..1..0..0..1..1..2..1
..0..2..2..1..1..3..3..2..3....1..0..1..0..1..0..0..2..2
..2..1..2..2..3..2..3..3..0....1..1..3..3..0..0..1..0..1
..2..2..1..1..3..3..2..2..0....0..0..3..3..1..1..0..0..1
..1..2..1..2..1..2..2..3..2....0..1..0..1..0..1..0..1..0
CROSSREFS
Sequence in context: A168667 A170781 A063825 * A170790 A043678 A032781
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 26 2014
STATUS
approved

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Last modified July 19 05:20 EDT 2024. Contains 374388 sequences. (Running on oeis4.)