A203874 Number of (n+1)X5 0..3 arrays with no 2X2 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..3 introduced in row major order

4375, 500095, 57177415, 6542729803, 748675224487, 85671438703075, 9803443695486967, 1121815509393271267, 128370200942208070567, 14689499750476722504019, 1680930631372929899355415

Offset

1,1

Comments

Column 4 of A203878

Links

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

Formula

Empirical: a(n) = 118*a(n-1) -117*a(n-2) -34398*a(n-3) +120834*a(n-4) -86436*a(n-5)

Example

Some solutions for n=4
..0..0..0..0..0....0..0..0..0..0....0..1..0..0..0....0..0..0..1..2
..1..2..1..1..1....1..1..1..1..1....2..3..2..1..2....1..1..3..1..2
..3..2..3..3..2....0..2..0..2..0....0..3..2..3..0....0..0..2..0..3
..1..0..0..1..0....1..1..3..1..1....0..1..0..3..0....1..1..2..0..2
..1..2..2..3..3....2..2..3..2..2....2..3..2..3..0....0..3..3..3..2

Crossrefs

Sequence in context: A375622 A376924 A111345 * A205317 A252645 A252858

Adjacent sequences: A203871 A203872 A203873 * A203875 A203876 A203877

Keyword

nonn

Author

R. H. Hardin Jan 07 2012

Status

approved