A209608 Number of nX6 1..2 arrays with every element value z a city block distance of exactly z from another element value z

4, 538, 39667, 1947347, 95442732, 4623938410, 223164388883, 10856162934984, 528920119608746, 25753779566714769, 1253886238749742186, 61044670504573175803, 2971820260865357745857, 144678418539833929320007

Offset

1,1

Comments

Column 6 of A209610

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=3
..2..1..1..2..2..1....1..1..2..1..2..2....1..1..2..1..2..2....1..1..1..1..2..2
..1..1..1..1..1..1....2..2..2..1..1..1....1..2..2..1..2..1....1..1..1..2..2..2
..2..1..1..2..2..2....2..2..1..1..2..2....1..1..2..1..1..1....1..1..1..1..1..1

Crossrefs

Sequence in context: A152218 A152463 A295206 * A159367 A012770 A332154

Adjacent sequences: A209605 A209606 A209607 * A209609 A209610 A209611

Keyword

nonn

Author

R. H. Hardin Mar 10 2012

Status

approved