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 A053878 #8 Mar 30 2012 18:51:20 %S A053878 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,7,1,1,1,1,1,1,1,1,1, %T A053878 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,3,5,1,1,1,1,1,1,1,1,1,4,1,1,4,1, %U A053878 1,1,1,1,1,1,1,1,1,1,1,1,1,11,13,2,5,11,13,2,1,5,2,1,1,1,1,3,1,1,1,3,1,1,1 %N A053878 Difference between numerator and denominator of lowest terms fraction from division of a highly composite number (1) by its predecessor. %C A053878 Successive fractions are 2/1, 2/1, 3/2, 2/1, 2/1, 3/2, 4/3, 5/4, 2/1, 3/2, 4/3, 3/2, 2/1. %C A053878 This sequence is not multiplicative. %F A053878 a(n) = A054483(n)-A054482(n) =(A002182(n)-A002182(n-1))/A054481(n). %e A053878 a(7)=1 since A002182(7)=36, A002182(6)=24, 36/24=3/2 in lowest terms and 3-2=1. %Y A053878 Cf. A002182. %K A053878 nonn %O A053878 2,25 %A A053878 _Henry Bottomley_, Mar 31 2000 %E A053878 More terms from _Jud McCranie_, Jun 09 2005