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 A077620 #9 Mar 28 2025 04:36:22 %S A077620 1,2,3,5,7,11,13,14,15,17,19,21,22,23,29,31,33,34,35,37,38,39,41,42, %T A077620 43,46,47,53,55,57,58,59,61,62,65,67,69,71,73,74,77,79,82,83,85,86,87, %U A077620 89,91,93,94,95,97,101,103,105,106,107,109,110,111,113,114,115,118,119 %N A077620 Numbers occurring only once in A076734. %C A077620 Primes are a subsequence: A077618(A000040(n)) = 1. %H A077620 Amiram Eldar, <a href="/A077620/b077620.txt">Table of n, a(n) for n = 1..10000</a> %F A077620 A077618(a(n)) = 1. %Y A077620 Cf. A076734, A077618, A077619, A077621. %K A077620 nonn %O A077620 1,2 %A A077620 _Reinhard Zumkeller_, Nov 12 2002