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A060849 Difference between 2 consecutive primes between which a nontrivial power of prime is found. 1
2, 4, 4, 4, 6, 6, 6, 6, 6, 4, 14, 14, 4, 6, 10, 6, 10, 10, 8, 12, 18, 12, 6, 14, 14, 10, 34, 6, 24, 14, 14, 24, 24, 6, 12, 16, 16, 22, 8, 6, 10, 10, 12, 10, 18, 10, 6, 16, 8, 18, 10, 18, 6, 20, 20, 34, 18, 14, 10, 12, 30, 24, 8, 16, 14, 6, 36, 20, 12, 28, 12, 10, 12, 14, 20, 22, 22 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
FORMULA
a(n) = nextprime(A246547(n)) - prevprime(A246547(n)) = A013633(A246547(n)). [corrected by Michel Marcus, Mar 23 2020]
EXAMPLE
59049=3^10 is between 59029 and 59051, so the corresponding term is 59051-59029=22.
PROG
(PARI) ispp(n) = isprimepower(n) >= 2; \\ A246547
lista(nn) = {for (n=1, nn, if (ispp(n), print1(nextprime(n) - precprime(n), ", ")); ); } \\ Michel Marcus, Mar 23 2020
CROSSREFS
Sequence in context: A258573 A060271 A073806 * A130819 A307097 A050829
KEYWORD
nonn
AUTHOR
Labos Elemer, May 03 2001
STATUS
approved

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Last modified May 18 14:53 EDT 2024. Contains 372640 sequences. (Running on oeis4.)