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A073680 a(1) =2, a(2) = 3, a(n+2) = smallest prime such that a(n+2) - a(n+1) is a multiple of a(n). 3
2, 3, 5, 11, 31, 53, 239, 557, 7727, 11069, 88339, 110477, 1347223, 2672947, 8061839, 24099521, 362696759, 2483454607, 7561209233, 67164119801, 520836673781, 923821392587, 4048841435273, 7744127005621, 129209370063811 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
One might call them Fibonacci-type primes.
LINKS
EXAMPLE
a(6)-a(5) = 53-31 = 22 is a multiple of 11 = a(4).
PROG
(PARI) l=2; h=3; print("2, 3, "); while(l<2^128, t=l+h; while(!isprime(t), t+=l); print1(t, ", "); l=h; h=t)
CROSSREFS
Sequence in context: A360815 A087580 A072535 * A079557 A090709 A357220
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Aug 11 2002
EXTENSIONS
More terms from Phil Carmody, Aug 15 2002
STATUS
approved

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Last modified May 23 07:28 EDT 2024. Contains 372760 sequences. (Running on oeis4.)