A236742 Number of (n+1)X(4+1) 0..2 arrays with the upper median plus the lower median of every 2X2 subblock equal.

2907, 46377, 810039, 17740369, 385709603, 8588436417, 191076235235, 4264088666817, 95158587393555, 2124503121319369, 47432458018976571, 1059062551621375497, 23646680112572524799, 527986653271235027861

Offset

1,1

Comments

Column 4 of A236746

Links

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

R. H. Hardin, Empirical recurrence of order 86

Formula

Empirical recurrence of order 86 (see link above)

Example

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

Crossrefs

Sequence in context: A153412 A186819 A247317 * A254183 A254190 A253795

Adjacent sequences: A236739 A236740 A236741 * A236743 A236744 A236745

Keyword

nonn

Author

R. H. Hardin, Jan 30 2014

Status

approved