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A100656
a(n)=1 if a hexagonal number is a prime, otherwise 0.
0
0, 1, 1, 1, 1, 0, 1, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1
OFFSET
0,1
CROSSREFS
Sequence in context: A131720 A131719 A342460 * A285274 A189081 A296084
KEYWORD
easy,nonn
AUTHOR
Giovanni Teofilatto, Jan 12 2005
STATUS
approved