A251447 Number of (n+1) X (4+1) 0..2 arrays with no 2 X 2 subblock having the minimum of its diagonal elements less than the absolute difference of its antidiagonal elements.

6505, 295339, 14434472, 711649307, 35114707166, 1733325153538, 85556587695052, 4223166671228639, 208458935686468001, 10289725682300720114, 507910087570520572800, 25070902359432483734308, 1237522406240832903706833

Offset

1,1

Comments

Column 4 of A251451.

Links

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

R. H. Hardin, Empirical recurrence of order 88

Formula

Empirical recurrence of order 88 (see link above).

Example

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

Crossrefs

Cf. A251451.

Sequence in context: A049529 A284102 A338951 * A156416 A156418 A258521

Adjacent sequences: A251444 A251445 A251446 * A251448 A251449 A251450

Keyword

nonn

Author

R. H. Hardin, Dec 02 2014

Status

approved