A219062 Hilltop maps: number of nX7 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..2 nX7 array

97, 15867, 2066359, 263575309, 33722499289, 4315297469409, 552229937914889, 70668643594275151, 9043426286867114303, 1157282269013283021593, 148096773360941683861081, 18951862408313255515471545

Offset

1,1

Comments

Column 7 of A219063

Links

R. H. Hardin, Table of n, a(n) for n = 1..78

Example

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

Crossrefs

Sequence in context: A218591 A218205 A218232 * A218318 A233426 A173129

Adjacent sequences: A219059 A219060 A219061 * A219063 A219064 A219065

Keyword

nonn

Author

R. H. Hardin Nov 11 2012

Status

approved