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 A214789 #13 Nov 25 2014 13:58:29 %S A214789 2,4,2,7,4,10,8,7,2,4,5,19,6,10,18,7,25,19,13,37,8,25,31,19,38,34,19, %T A214789 31,9,58,25,19,35,25,15,19,45,13,24,37,27,10,30,25,24,31,23,19,24,64, %U A214789 67,49,61,19,15,31,67,37,20 %N A214789 a(n) is the smallest k>=2 such that n divides A000045(k-1)+8. %H A214789 Charles R Greathouse IV, <a href="/A214789/b214789.txt">Table of n, a(n) for n = 1..10000</a> %o A214789 (PARI) a(n)=my(k); while(((Mod([1,1;1,0],n))^k++)[1,2]!=-8, ); k+1 \\ _Charles R Greathouse IV_, Nov 25 2014 %Y A214789 Cf. A214783, A214784, A214785, A214786. %K A214789 nonn %O A214789 1,1 %A A214789 _Art DuPre_, Aug 03 2012 %E A214789 Definition corrected. - _R. J. Mathar_, Aug 09 2012