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 A109654 #27 Sep 21 2024 11:24:49 %S A109654 3,11,17,29,41,47,61,71,83,101,107,127,139,151,167,179,193,211,227, %T A109654 239,251,269,281,293,313,337,349,367,379,397,419,431,443,461,467,491, %U A109654 503,523,557,569,587,599,613,631,643,659,677,691,719,733,751,769,787,811,823,839,859,877,887 %N A109654 Primes A000040(i) such that A003849(i-1) = 1. %C A109654 Original sequence name: Primes aligned with instances of '1' in the infinite Fibonacci word sequence A003849. %F A109654 a(n) = A000040(A003622(n) + 1) = prime(floor(n*phi^2)), where phi = (1+sqrt(5))/2 is the golden ration. - _Charles R Greathouse IV_ and _Danny Rorabaugh_, Apr 21 2015 %o A109654 (PARI) a(n) = prime(floor(n*((sqrt(5)+1)/2)^2)) /* _Georg Fischer_, Sep 21 2024 */ %Y A109654 Cf. A003849. %K A109654 nonn,easy,less %O A109654 1,1 %A A109654 _E.J.P. Vening_, Aug 05 2005 %E A109654 Name clarified by _Danny Rorabaugh_, Apr 19 2015 %E A109654 a(21)=251 inserted and more terms from _Georg Fischer_, Sep 21 2024