A218636 - OEIS

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A218636

Hilltop maps: number of nX6 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..3 nX6 array

57, 4065, 262017, 16773477, 1073471633, 68702054721, 4396930705721, 281403528942981, 18009823835462025, 1152628595873880165, 73768221838169850821, 4721165666554240664629, 302154568669832438214889

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

OFFSET

1,1

COMMENTS

Column 6 of A218638

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..74

EXAMPLE

Some solutions for n=3

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

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

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