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Search: id:A083571
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A083571 Numbers n such that A008509(n) is prime. +0
4
2, 3, 5, 10, 12, 72 (list; graph; listen)
OFFSET

1,1

LINKS

P. De Geest, Subsets of palindromic triangulars

CROSSREFS

Cf. A008509, A050722, A008510, A050721.

Sequence in context: A039022 A079251 A050051 this_sequence A123090 A129281 A022426

Adjacent sequences: A083568 A083569 A083570 this_sequence A083572 A083573 A083574

KEYWORD

nonn,base,hard

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Jun 14, 2003

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Last modified December 19 12:50 EST 2009. Contains 171053 sequences.


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