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 A247425 #6 Jan 05 2025 19:51:40 %S A247425 1,3,4,6,7,9,11,12,14,16,17,19,20,22,24,25,27,28,30,32,33,35,37,38,40, %T A247425 41,43,45,46,48,49,51,53,54,56,58,59,61,62,64,66,67,69,71,72,74,75,77, %U A247425 79,80,82,83,85,87,88,90,92,93,95,96,98,100,101,103,105 %N A247425 A005206(A003259(n)). %C A247425 This is the function named psi in [Carlitz]. %H A247425 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 A247425 a(n) = A000201(n) - 1 for n of the form A000201(A003234(j)) + 1; a(n) = A000201(n) for other n. [Carlitz, Thm. 4.6]. %K A247425 nonn %O A247425 1,2 %A A247425 _Eric M. Schmidt_, Sep 17 2014