A235953 Number of (n+1)X(7+1) 0..2 arrays colored with the upper median value of each 2X2 subblock

58896, 18468, 4884, 7320, 9260, 14440, 21288, 29328, 41748, 57760, 83202, 117312, 164264, 231040, 333776, 469248, 657056, 924160, 1335104, 1876992, 2628224, 3696640, 5340416, 7507968, 10512896, 14786560, 21361664, 30031872, 42051584

Offset

1,1

Comments

Column 7 of A235954

Links

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

Formula

Empirical: a(n) = 4*a(n-4) for n>15

Example

Some solutions for n=5
..1..2..1..0..0..2..0..0....2..0..1..2..0..0..0..2....1..0..1..2..1..0..2..1
..0..0..2..1..0..1..2..0....0..0..2..1..0..1..2..1....2..0..0..0..2..0..0..0
..1..0..1..2..0..0..0..2....1..2..0..0..0..2..0..0....1..2..1..0..1..2..1..0
..2..0..0..0..2..1..0..1....2..1..0..1..2..1..0..1....0..0..2..0..0..0..2..0
..1..2..1..0..1..2..0..0....0..0..0..2..0..0..0..2....2..0..1..2..1..0..1..2
..1..1..2..0..0..1..2..1....0..1..2..1..0..1..2..0....2..0..0..1..2..0..0..0

Crossrefs

Sequence in context: A157131 A217603 A205233 * A343374 A359310 A321826

Adjacent sequences: A235950 A235951 A235952 * A235954 A235955 A235956

Keyword

nonn

Author

R. H. Hardin, Jan 17 2014

Status

approved