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A184279
Number of distinct n X 2 toroidal 0..2 arrays.
2
6, 27, 130, 855, 5934, 44487, 341802, 2691675, 21524542, 174348099, 1426419858, 11767964475, 97764131646, 817028814447, 6863038218842, 57906884938095, 490505347906086, 4169295457231347, 35548729443032994, 303941636737938639
OFFSET
1,1
LINKS
CROSSREFS
Column 2 of A184284.
Sequence in context: A109115 A038176 A104745 * A299598 A343492 A323928
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 10 2011
EXTENSIONS
Terms a(17) and beyond from Andrew Howroyd, Sep 27 2017
STATUS
approved