# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a073680 Showing 1-1 of 1 %I A073680 #10 Jul 18 2014 22:28:48 %S A073680 2,3,5,11,31,53,239,557,7727,11069,88339,110477,1347223,2672947, %T A073680 8061839,24099521,362696759,2483454607,7561209233,67164119801, %U A073680 520836673781,923821392587,4048841435273,7744127005621,129209370063811 %N 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). %C A073680 One might call them Fibonacci-type primes. %H A073680 T. D. Noe, Table of n, a(n) for n=1..100 %e A073680 a(6)-a(5) = 53-31 = 22 is a multiple of 11 = a(4). %o A073680 (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) %Y A073680 Cf. A072999, A072535. %K A073680 nonn %O A073680 1,1 %A A073680 _Amarnath Murthy_, Aug 11 2002 %E A073680 More terms from _Phil Carmody_, Aug 15 2002 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE