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A218194 Hilltop maps: number of nX6 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or vertical neighbor in a random 0..3 nX6 array 1
57, 4001, 260205, 16703113, 1068969245, 68410191725, 4378092248621, 280189181606213, 17931584186079329, 1147588053510298689, 73443503055457761265, 4700247703823958214433, 300807117566919214489057 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A218196

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..14

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A122533 A015259 A218808 * A218370 A218636 A218240

Adjacent sequences:  A218191 A218192 A218193 * A218195 A218196 A218197

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 23 2012

STATUS

approved

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Last modified January 20 17:42 EST 2022. Contains 350472 sequences. (Running on oeis4.)