This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A155011 #23 Nov 08 2017 07:42:24 %S A155011 2,3,5,89,233, %T A155011 10597999265301490732599643671505003412515860435409421932560009680142974347195483140293254396195769876129909 %N A155011 Sophie Germain Fibonacci prime numbers. %C A155011 2*2+1=5, 2*3+1=7, 2*5+1=11, ... %C A155011 No additional terms up through Fibonacci(10000). - _Harvey P. Dale_, Nov 26 2013 %C A155011 No additional terms up through Fibonacci(50000). - _Chai Wah Wu_, Nov 04 2015 %F A155011 a(n) = (A263880(n) - 1)/2. - _Jonathan Sondow_, Nov 04 2015 %t A155011 a={};Do[f=Fibonacci[n];If[PrimeQ[f],If[PrimeQ[2*f+1],AppendTo[a,f]]],{n,3*6!}];a %t A155011 Select[Fibonacci[Range[2000]],And@@PrimeQ[{#,2#+1}]&] (* _Harvey P. Dale_, Nov 26 2013 *) %o A155011 (Python) %o A155011 from gmpy2 import is_prime %o A155011 A155011_list = [] %o A155011 a, b, a2, b2 = 0, 1, 1, 3 %o A155011 for _ in range(10**6): %o A155011 if is_prime(b) and is_prime(b2): %o A155011 A155011_list.append(b) %o A155011 a, b, a2, b2 = b, a+b, b2, a2+b2-1 # _Chai Wah Wu_, Nov 04 2015 %Y A155011 Cf. A005478, A000045, A005384, A263880. %K A155011 nonn %O A155011 1,1 %A A155011 _Vladimir Joseph Stephan Orlovsky_, Jan 18 2009