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A068435 Consecutive prime powers without a prime between them. 0
8, 9, 25, 27, 121, 125, 2187, 2197, 32761, 32768 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Only 5 terms are known to 10^14.

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

8=2^3, 9=2^3, there is no prime between 8 and 9. 25=5^2, 27=3^3, there is no prime between 25 and 27.

CROSSREFS

Sequence in context: A077599 A109097 A115645 * A302554 A124438 A124184

Adjacent sequences:  A068432 A068433 A068434 * A068436 A068437 A068438

KEYWORD

nonn,more

AUTHOR

Jon Perry, Mar 09 2002

STATUS

approved

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Last modified May 23 12:38 EDT 2019. Contains 323514 sequences. (Running on oeis4.)