A253877 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A253877

Number of (7+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal maximum minus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally

21426176, 1689797632, 111370158592, 8407169495552, 580087707480832, 40954149283756544, 2875255935248467200, 201829672443656315648, 14124070170784841294080, 989446756729598826020096

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Row 7 of A253871

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..38

EXAMPLE

Some solutions for n=1

..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0

..1..0..0....0..0..0....1..0..0....1..0..0....0..0..0....1..0..0....1..0..0

..0..0..0....0..0..1....1..0..0....1..0..1....0..0..1....0..0..0....0..0..0

..1..0..1....1..1..1....1..0..1....0..1..1....0..0..1....1..1..0....0..0..1

..0..0..1....0..0..1....1..0..1....0..0..1....1..0..1....1..0..1....0..0..1

..0..0..0....1..1..0....1..1..0....1..0..1....1..1..1....1..0..0....1..0..1

..1..0..1....0..0..0....0..0..0....1..0..1....0..0..0....0..0..0....1..0..1

..1..0..1....1..0..1....0..1..1....0..0..0....0..1..1....1..1..0....1..0..1

..1..1..1....0..0..1....1..0..1....1..0..0....0..1..1....0..0..0....1..1..0

CROSSREFS

Sequence in context: A206108 A034613 A253870 * A253543 A334372 A250912

Adjacent sequences: A253874 A253875 A253876 * A253878 A253879 A253880

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 17 2015

STATUS

approved