A237134 Number of (n+1)X(n+1) 0..3 arrays with the maximum plus the upper median of every 2X2 subblock equal

256, 22960, 9999802, 50384979024, 1265341553110578, 228789901383673689174, 221397526252157619725259427, 1328440646465169308310698650263760, 45372102198987511081849578962073926845151

Offset

1,1

Comments

Diagonal of A237142

Links

R. H. Hardin, Table of n, a(n) for n = 1..10

Example

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

Crossrefs

Sequence in context: A251968 A017116 A206055 * A205948 A309827 A205019

Adjacent sequences: A237131 A237132 A237133 * A237135 A237136 A237137

Keyword

nonn

Author

R. H. Hardin, Feb 04 2014

Status

approved