A209533 - OEIS

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A209533

Half the number of (n+1)X8 0..2 arrays with every 2X2 subblock having exactly two distinct clockwise edge differences

257, 4097, 65537, 1048577, 16777217, 268435457, 4294967297, 68719476737, 1099511627777, 17592186044417, 281474976710657, 4503599627370497, 72057594037927937, 1152921504606846977, 18446744073709551617

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

OFFSET

1,1

COMMENTS

Column 7 of A209534

LINKS

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

FORMULA

Empirical: a(n) = 16^(n+1)+1

EXAMPLE

Some solutions for n=4

..2..1..0..1..2..1..0..1....1..2..1..2..1..0..1..0....2..1..0..1..0..1..2..1

..1..2..1..2..1..0..1..2....2..1..2..1..2..1..2..1....1..2..1..2..1..0..1..2

..2..1..2..1..0..1..2..1....1..2..1..0..1..0..1..2....2..1..2..1..0..1..2..1

..1..2..1..2..1..0..1..0....2..1..0..1..0..1..2..1....1..2..1..0..1..2..1..2

..2..1..2..1..2..1..2..1....1..0..1..2..1..2..1..2....0..1..2..1..2..1..0..1

CROSSREFS

Sequence in context: A054801 A173892 A373468 * A125648 A353941 A351271

Adjacent sequences: A209530 A209531 A209532 * A209534 A209535 A209536

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 10 2012

STATUS

approved