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 A112440 #3 Mar 31 2012 10:30:58 %S A112440 0,0,0,0,0,0,0,0,0,9,9,18,27,36,45,54,45,45,45,45,45,45,45,45,45,45, %T A112440 45,45,45,45,45,45,45,45,45,45,45,45,45 %N A112440 Next term is the sum of the last 10 digits in the sequence, beginning with a(10) = 9. %C A112440 Variation on Angelini's A112395. The sequence cycles at a(17)=45 and the loop has one term. Computed by Gilles Sadowski. %e A112440 a(17)=45 because 1+8 + 2+7 + 3+6 + 4+5 + 5+4 = 45 %Y A112440 Cf. A112395, A004207, A065075, A001370. %K A112440 base,easy,nonn %O A112440 1,10 %A A112440 _Alexandre Wajnberg_, Dec 11 2005