A237947 Number of (n+1)X(2+1) 0..3 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one

1460, 12218, 102396, 945688, 8557942, 78337964, 716030830, 6626058730, 60902085946, 559346439326, 5140225864226, 47419445292180, 436362328110996, 4011308753979910, 36899808297882686, 339945224296109426

Offset

1,1

Comments

Column 2 of A237951

Links

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

Example

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

Crossrefs

Sequence in context: A276101 A219725 A219722 * A205316 A283493 A232347

Adjacent sequences: A237944 A237945 A237946 * A237948 A237949 A237950

Keyword

nonn

Author

R. H. Hardin, Feb 16 2014

Status

approved