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

0,1

LINKS

Table of n, a(n) for n=0..27.

CROSSREFS

Sequence in context: A080908 A131720 A131719 * A285274 A189081 A296084

Adjacent sequences:  A100653 A100654 A100655 * A100657 A100658 A100659

KEYWORD

easy,nonn

AUTHOR

Giovanni Teofilatto, Jan 12 2005

STATUS

approved

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Last modified April 7 11:04 EDT 2020. Contains 333301 sequences. (Running on oeis4.)