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A109758 Numbers n such that (10's complement factorial of n) - 1 is semiprime. +0
1
5, 6, 10, 13, 20, 22, 23, 24, 27, 29, 33, 40 (list; graph; listen)
OFFSET

1,1
CROSSREFS

Cf. A110396, A109617.

Adjacent sequences: A109755 A109756 A109757 this_sequence A109759 A109760 A109761

Sequence in context: A102506 A062845 A005847 this_sequence A024706 A015820 A096728

KEYWORD

more,nonn

AUTHOR

Jason Earls (jcearls(AT)cableone.net), Aug 12 2005

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Last modified May 16 23:01 EDT 2008. Contains 139884 sequences.

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