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Search: id:A069065
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A069065 Sigma(n)-phi(n) is a triangular number. +0
1
1, 6, 33, 49, 62, 65, 70, 72, 74, 77, 90, 126, 206, 210, 216, 297, 371, 427, 435, 465, 611, 626, 662, 665, 715, 731, 779, 784, 790, 846, 851, 854, 855, 899, 917, 1147, 1183, 1311, 1322, 1397, 1400, 1464, 1529, 1530, 1560, 1687, 1766, 1781, 1799, 1800, 1810 (list; graph; listen)
OFFSET

1,2

CROSSREFS

Sequence in context: A135538 A132548 A140521 this_sequence A073343 A157872 A153127

Adjacent sequences: A069062 A069063 A069064 this_sequence A069066 A069067 A069068

KEYWORD

easy,nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 05 2002

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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