A236981 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 equal

888, 3852, 16212, 85064, 429108, 2380742, 12891190, 73033832, 407662600, 2333365070, 13220203386, 76129805278, 435052159304, 2515577967734, 14458394715076, 83858270702244, 484060453024772, 2814490812097076

Offset

1,1

Comments

Column 2 of A236987

Links

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

R. H. Hardin, Empirical recurrence of order 92

Formula

Empirical recurrence of order 92 (see link above)

Example

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

Crossrefs

Sequence in context: A202446 A043523 A066270 * A203724 A006915 A178270

Adjacent sequences: A236978 A236979 A236980 * A236982 A236983 A236984

Keyword

nonn

Author

R. H. Hardin, Feb 02 2014

Status

approved