A117094 - OEIS

A117094

Numbers n such that nextprime(5*n)>5*nextprime(n) (if p is prime then nextprime(p)=p).

2, 3, 5, 7, 11, 13, 17, 18, 19, 23, 28, 29, 31, 37, 40, 41, 43, 47, 53, 59, 60, 61, 67, 71, 72, 73, 78, 79, 82, 83, 89, 96, 97, 101, 102, 103, 105, 106, 107, 109, 113, 127, 131, 137, 139, 149

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..46.

EXAMPLE

nextprime(5*13)=67 and nextprime(5)*nextprime(13)=5*13=65 then 13 is member because 67>65

PROG

(PARI) for(i=1, 150, if(nextprime(5*i)>nextprime(5)*nextprime(i), print1(i, ", ")))

CROSSREFS

Sequence in context: A117285 A100546 A359373 * A171057 A229786 A242122

Adjacent sequences: A117091 A117092 A117093 * A117095 A117096 A117097

KEYWORD

easy,nonn

AUTHOR

Mohammed Bouayoun (mohammed.bouayoun(AT)sanef.com), Apr 18 2006

STATUS

approved