A194620 Half the number of lower triangles of a 7X7 0..n array with no element equal to the average of its horizontal and vertical neighbors

1901849, 202803700252, 1988649454264015, 1946585305112431165, 481414314393133400117, 46519509694797259637061, 2430369828996738172677912

Offset

1,1

Comments

Row 6 of A194615

Links

Table of n, a(n) for n=1..7.

Example

Some solutions for n=2
..0..............0..............0..............0..............0
..1.0............1.0............1.0............1.0............1.0
..0.0.1..........0.0.1..........0.0.1..........0.0.1..........0.0.1
..0.0.0.0........0.0.0.0........0.0.0.0........0.0.0.0........0.0.0.0
..1.1.0.2.2......1.1.0.1.2......1.1.0.1.1......1.1.0.1.0......1.1.0.1.2
..0.0.0.2.1.2....0.0.0.0.2.2....0.0.0.2.2.1....0.0.2.0.2.0....0.0.1.0.1.2
..0.1.1.0.0.0.2..1.1.1.0.0.1.0..1.0.2.0.0.1.0..0.1.0.1.0.1.2..1.1.1.2.1.1.2

Crossrefs

Sequence in context: A204672 A323705 A249318 * A182360 A133542 A215568

Adjacent sequences: A194617 A194618 A194619 * A194621 A194622 A194623

Keyword

nonn

Author

R. H. Hardin Aug 30 2011

Status

approved