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A253039 Number of (n+2) X (3+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
928, 998, 1750, 3119, 6086, 12641, 25184, 54251, 111467, 239582, 500112, 1084951, 2264912, 4927102, 10326385, 22471670, 47248426, 102846945, 216359840, 471311716, 993403943, 2162719496, 4561950718, 9932410117, 20975309974 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 3 of A253044.
LINKS
FORMULA
Empirical recurrence of order 78 (see link above).
EXAMPLE
Some solutions for n=4
..0..0..1..0..1....0..1..1..2..2....0..1..0..1..0....0..0..1..1..2
..2..2..1..1..2....0..2..2..1..1....2..2..0..0..2....2..1..1..0..0
..2..0..2..0..2....1..1..2..1..2....2..1..2..1..2....2..0..0..1..0
..0..2..2..0..0....1..1..0..0..1....0..2..2..1..1....1..1..0..0..3
..0..2..0..2..0....2..0..2..0..2....0..1..1..2..1....1..0..1..1..3
..3..3..0..0..1....1..0..0..2..2....2..2..1..1..3....3..1..1..0..0
CROSSREFS
Cf. A253044.
Sequence in context: A099688 A257485 A255106 * A237229 A219526 A249535
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 26 2014
STATUS
approved

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Last modified June 16 23:34 EDT 2024. Contains 373432 sequences. (Running on oeis4.)