A251296 Number of (n+1)X(4+1) 0..3 arrays with every 2X2 subblock summing to 3 6 or 9

12556, 164480, 2302844, 34973116, 579830068, 10472034724, 203797267488, 4207802278096, 90738646067520, 2017077344017048, 45771997001115280, 1053057594895863688, 24449522574501796984, 571109263338575255572

Offset

1,1

Comments

Column 4 of A251300

Links

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

R. H. Hardin, Empirical recurrence of order 44

Formula

Empirical recurrence of order 44 (see link above)

Example

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

Crossrefs

Sequence in context: A298313 A225151 A237907 * A205757 A205587 A235103

Adjacent sequences: A251293 A251294 A251295 * A251297 A251298 A251299

Keyword

nonn

Author

R. H. Hardin, Dec 01 2014

Status

approved