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A252845
Number of (1+2)X(n+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
1305, 15395, 175204, 2045858, 23788014, 277324636, 3231587589, 37668251387, 439059475960, 5117820299952, 59655081232232, 695361723264101, 8105403729361748, 94479728193131557, 1101292442347401777
OFFSET
1,1
COMMENTS
Row 1 of A252844
FORMULA
Empirical recurrence of order 96 (see link above)
EXAMPLE
Some solutions for n=3
..0..0..0..1..1....0..0..1..0..1....0..1..0..0..2....0..0..1..1..1
..2..0..0..0..0....2..2..1..1..2....2..2..1..1..2....1..1..2..2..0
..1..3..3..0..3....3..2..2..0..0....0..0..0..0..1....0..0..0..2..2
CROSSREFS
Sequence in context: A252308 A277772 A252844 * A252841 A255025 A126841
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 22 2014
STATUS
approved