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 A100758 #4 Dec 05 2013 19:56:58 %S A100758 11,131,587,1646443,6827,18011869,9120065483,363724245921599, %T A100758 975761724248252813688864599,17542508725666616033, %U A100758 111131968773953028264114836512440131291369683 %N A100758 Greatest prime factor of the concatenation of terms of the n-th row of the triangle formed by the Stirling number of the second kind. %C A100758 Are these concatenations squarefree? %F A100758 a(n) = A006530[A061113(n)]. - _R. J. Mathar_, Aug 07 2007 %e A100758 a(4) = 587 is the greatest prime factor of 1761 =3*587. %Y A100758 Cf. A100755, A100756, A100757, A008277. %K A100758 base,easy,nonn %O A100758 2,1 %A A100758 _Amarnath Murthy_, Nov 23 2004 %E A100758 More terms from _R. J. Mathar_, Aug 07 2007