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 A085874 #5 Dec 05 2013 19:56:18 %S A085874 2,3,17,67,4019,24113,675163,16203911,2333363183,23333631829, %T A085874 7186758603331,3880849645798739,302706272372301641, %U A085874 148326073462427804089,4449782203872834122669,498375606833757421738927 %N A085874 a(1) = 2, a(n)= smallest prime of the form k*a(n-1) - 1 where k itself is a multiple of n. %e A085874 a(2) = 3 = 2*2 - 1, a(3) = 17 = 6*3 -1, a(4) = 67 = 4*17 - 1, 2,6 and 4 are respectively multiples of 2,3 and 4. %Y A085874 Cf. A085873. %K A085874 nonn %O A085874 1,1 %A A085874 _Amarnath Murthy_, Jul 07 2003 %E A085874 More terms from _Ray Chandler_, Jul 08 2003