A237030 Number of (n+1)X(3+1) 0..2 arrays with the maximum of every 2X2 subblock equal

4042, 221994, 11703666, 638436002, 34552648978, 1877852845426, 101931021677874, 5535866559864146, 300598632229153394, 16323738622843292626, 886423519070746122162, 48135683617041421708818

Offset

1,1

Comments

Column 3 of A237035

Links

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

Formula

Empirical: a(n) = 44*a(n-1) +881*a(n-2) -15698*a(n-3) -113114*a(n-4) +890992*a(n-5) +3248928*a(n-6) -2915328*a(n-7) -5741568*a(n-8) +4644864*a(n-9)

Example

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

Crossrefs

Sequence in context: A178274 A332458 A204948 * A252809 A202313 A001382

Adjacent sequences: A237027 A237028 A237029 * A237031 A237032 A237033

Keyword

nonn

Author

R. H. Hardin, Feb 02 2014

Status

approved