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A124291 Largest prime < 10*a[n-1], a[1]=7. +0
1
7, 67, 661, 6607, 66067, 660661, 6606581, 66065773, 660657713, 6606577129, 66065771269, 660657712667, 6606577126663, 66065771266577, 660657712665739, 6606577126657373, 66065771266573693, 660657712665736927 (list; graph; listen)
OFFSET

1,1

CROSSREFS

Cf. A006902, A040016, A120031-A120041.

Adjacent sequences: A124288 A124289 A124290 this_sequence A124292 A124293 A124294

Sequence in context: A106111 A103102 A077789 this_sequence A067275 A073552 A036948

KEYWORD

nonn

AUTHOR

Artur Jasinski (grafix(AT)csl.pl), Dec 16 2006

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Last modified May 15 13:16 EDT 2008. Contains 139641 sequences.


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