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 A249594 #5 Nov 04 2014 05:56:53 %S A249594 2,4,7,11,12,14,17,18,19,22,23,27,30,32,34,37,38,41,42,45,47,50,51,53, %T A249594 54,55,58,61,64,65,68,71,72,74,75,78,80,81,84,87,89,90,94,97,100,102, %U A249594 105,108,109,111,113,116,117,119,120,123,125,129,133,134,135 %N A249594 Positions of primes in A249054. %C A249594 A249054(a(n)) = A000040(n); sequence is strictly increasing, i.e. all primes occur in A249054 in natural order, see also A249595. %H A249594 Reinhard Zumkeller, <a href="/A249594/b249594.txt">Table of n, a(n) for n = 1..10000</a> %o A249594 (Haskell) %o A249594 import Data.List (elemIndex); import Data.Maybe (fromJust) %o A249594 a249594 = (+ 1) . fromJust . (`elemIndex` a249054_list) . a000040 %Y A249594 Cf. A000040, A026233, A049084, A239968, A249054, A249595 (complement). %K A249594 nonn %O A249594 1,1 %A A249594 _Reinhard Zumkeller_, Nov 03 2014