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A007648 n.18^n + 1 is a prime.
(Formerly M3079)
+0
1
1, 3, 21, 23, 842, 1683 (list; graph; listen)
OFFSET

1,2

REFERENCES

H. Dubner, Generalized Cullen numbers, J. Rec. Math., 21 (No. 3, 1989), 190-191.

CROSSREFS

Adjacent sequences: A007645 A007646 A007647 this_sequence A007649 A007650 A007651

Sequence in context: A043081 A091675 A067233 this_sequence A050586 A074217 A062219

KEYWORD

hard,nonn

AUTHOR

njas

EXTENSIONS

Error in description corrected 8/97.

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Last modified May 16 01:24 EDT 2008. Contains 139630 sequences.


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