A218637 - OEIS

A218637

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..3 nX7 array

113, 16257, 2096129, 268375113, 34351030657, 4396923919617, 562806164441653, 72039179359935185, 9221013924842933937, 1180289649641919709529, 151077058155294314735841, 19337861267846477086600769

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OFFSET

1,1

COMMENTS

Column 7 of A218638

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..33

EXAMPLE

Some solutions for n=3

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

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

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