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A129927 3-almost prime octagonal numbers. +0
1
645, 1281, 1825, 3201, 3605, 7701, 8965 (list; graph; listen)
OFFSET

1,1
CROSSREFS

Sequence in context: A061324 A089295 A100873 this_sequence A063844 A067845 A057942

Adjacent sequences: A129924 A129925 A129926 this_sequence A129928 A129929 A129930

KEYWORD

nonn

AUTHOR

Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Jun 06 2007

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

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