A237144 Number of (n+1)X(2+1) 0..3 arrays with the maximum plus the lower median of every 2X2 subblock equal

1472, 17616, 197724, 2463178, 30395540, 386318536, 4907807434, 63050866982, 810927873608, 10483172560776, 135678289455352, 1760563397196632, 22865546963394958, 297381473402377694, 3870021230461078504

Offset

1,1

Comments

Column 2 of A237150

Links

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

R. H. Hardin, Empirical recurrence of order 70

Formula

Empirical recurrence of order 70 (see link above)

Example

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

Crossrefs

Sequence in context: A255735 A252521 A237379 * A187310 A167575 A157505

Adjacent sequences: A237141 A237142 A237143 * A237145 A237146 A237147

Keyword

nonn

Author

R. H. Hardin, Feb 04 2014

Status

approved