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 A136022 #11 Jun 29 2014 13:56:30 %S A136022 19,1028,63326,4417267,336418691,27095099730,2264740360646, %T A136022 194526458511192,17050085068702458,1517704371492095702, %U A136022 136758640772944755122,12445444666179480674989,1141852084948606732236114,105483948921834512942168239 %N A136022 First differences of A136021. %F A136022 a(n) = A136021(n)-A136021(n-1). %e A136022 a(1)=19 because at 10^0 the prime divisor sum in A136021 is zero, so 19-0=19. From the second sum in A136021, 1047, subtract 19, so that a(2) = 1028. %Y A136022 Cf. A136021. %K A136022 more,nonn %O A136022 1,1 %A A136022 _Enoch Haga_, Dec 10 2007, Dec 12 2007 %E A136022 a(6) from R. J. Mathar, Dec 12 2007 %E A136022 Edited by _R. J. Mathar_, Apr 17 2009 %E A136022 a(7)-a(11) from _Max Alekseyev_, Jan 30 2012 %E A136022 a(12)-a(14) from _Hiroaki Yamanouchi_, Jun 29 2014