A236880 Number of (n+1)X(4+1) 0..2 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock equal

1523, 7995, 40199, 316921, 2265637, 19772641, 163853211, 1470283561, 12922658673, 117130624281, 1053941222501, 9597003044005, 87182660323649, 795698692769187, 7257199324152419, 66312291235989759, 605826618814826233

Offset

1,1

Comments

Column 4 of A236884

Links

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

Example

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

Crossrefs

Sequence in context: A031537 A217387 A031717 * A226700 A226701 A372753

Adjacent sequences: A236877 A236878 A236879 * A236881 A236882 A236883

Keyword

nonn

Author

R. H. Hardin, Feb 01 2014

Status

approved