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 A003258 M0635 #25 Jan 05 2025 19:51:33 %S A003258 2,3,5,7,8,10,12,13,15,16,18,20,21,23,24,26,28,29,31,33,34,36,37,39, %T A003258 41,42,44,46,47,49,50,52,54,55,57,58,60,62,63,65,67,68,70,71,73,75,76, %U A003258 78,80,81,83,84,86,88,89,91,92,94,96,97,99,101,102,104,105 %N A003258 The number m such that c'(m) = A005206(A003231(n)), where c'(m) = A249115(m) is the m-th positive integer not in A003231. %C A003258 This is the function named phi in the Carlitz-Scoville-Vaughan link. - _Eric M. Schmidt_, Aug 14 2014 %D A003258 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A003258 L. Carlitz, R. Scoville and T. Vaughan, <a href="https://web.archive.org/web/2024*/https://www.fq.math.ca/Scanned/11-4/carlitz.pdf">Some arithmetic functions related to Fibonacci numbers</a>, Fib. Quart., 11 (1973), 337-386. %F A003258 Conjecture: a(n) = A078489(n) + n - 1. - _Ralf Stephan_, Feb 24 2004 %K A003258 nonn %O A003258 1,1 %A A003258 _N. J. A. Sloane_ %E A003258 More terms and a definition from _Eric M. Schmidt_, Aug 17 2014 %E A003258 Definition edited by _Eric M. Schmidt_, Aug 07 2015