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A252842 Number of (n+2)X(2+2) 0..3 arrays with every consecutive three elements in every row and diagonal having one or two distinct values, and in every column and antidiagonal having two or three distinct values, and new values 0 upwards introduced in row major order 1
15395, 510488, 17431462, 598576435, 20541757032, 705111416679, 24203999575311, 830842687080423, 28520017219603855, 978996631680111286, 33605667415789875388, 1153569817068272958639, 39598180839349444564715 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 2 of A252844
LINKS
EXAMPLE
Some solutions for n=1
..0..0..1..1....0..1..0..0....0..1..1..0....0..0..0..0....0..0..0..1
..2..0..2..2....2..2..2..2....0..0..0..2....0..1..1..2....2..2..2..2
..2..3..3..0....2..1..2..2....3..1..3..1....1..1..0..1....0..2..0..2
CROSSREFS
Sequence in context: A345562 A345817 A252990 * A261724 A031637 A054838
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 22 2014
STATUS
approved

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Last modified June 12 18:49 EDT 2024. Contains 373359 sequences. (Running on oeis4.)