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 A181441 #17 Oct 15 2024 05:13:20 %S A181441 1,7,41,331,3001,42043,919913,19734581,440817757,12501968177, %T A181441 435748987787,19638537755027,692919372869953,30634679101122821, %U A181441 1695313841631390713 %N A181441 a(n) = A114537(n,n), the (n-1)-fold application of the prime function starting with the n-th nonprime. %C A181441 Found when generalizing Matula numbers to labeled trees. %F A181441 a(n) = prime^(n-1)(A018252(n)) = A114537(n,n). %e A181441 a(3) = prime(prime(A018252(3))) = prime(prime(6)) = prime(13) = 41. %Y A181441 Cf. A018252, A114537. %K A181441 nonn,more %O A181441 1,2 %A A181441 Raul Eduardo Capela Tello Rato (rtrato(AT)yahoo.com), Oct 20 2010 %E A181441 a(9)-a(15) from _Robert G. Wilson v_, Mar 07 2017