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

1305, 15395, 175204, 2045858, 23788014, 277324636, 3231587589, 37668251387, 439059475960, 5117820299952, 59655081232232, 695361723264101, 8105403729361748, 94479728193131557, 1101292442347401777

Offset

1,1

Comments

Row 1 of A252844

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 96

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

Adjacent sequences: A252842 A252843 A252844 * A252846 A252847 A252848

Keyword

nonn

Author

R. H. Hardin, Dec 22 2014

Status

approved