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 A135555 #7 Jul 17 2025 08:20:03 %S A135555 7,13,13,7,19,19,7,31,37,31,19,13,31,37,37,43,31,13,37,43,31,37,37,13, %T A135555 31,7,37,31,19,31,43,31,43,37,31,43,31,37,31,43,37,19,43,43,31,31,37, %U A135555 43,19,37,43,43,37,31,37,37,7,37,43,43,37,37,43,43,43,31,37 %N A135555 Prime sums of digits of the terms in A135554. %F A135555 a(n) = A007953(A135554(n)). - _Amiram Eldar_, Jul 17 2025 %t A135555 Select[DigitSum[Range[300]^4], PrimeQ] (* _Amiram Eldar_, Jul 17 2025 *) %Y A135555 Cf. A007953, A135554. %K A135555 easy,nonn,base %O A135555 1,1 %A A135555 _Enoch Haga_, Nov 25 2007 %E A135555 More terms from _Amiram Eldar_, Jul 17 2025