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 A098135 #2 Feb 24 2006 03:00:00 %S A098135 1,5,9,455,2618,315,271700,56751695,6930,3708514810,32152414840, %T A098135 135135,19749267715100,314645828225300,34918884,113543477411038675, %U A098135 473930651619825400,669278610,467655703593591713200 %N A098135 a(h) = d(h,j) = lcm( f(h,j,1) ... f(h,j,h) ), when j=3. %F A098135 Given f(h, j, a) = ( [ ((a/gcd(a, h)) / gcd(j+1, (a/gcd(a, h)))) * (h(j+1)) ] - [ ((a/gcd(a, h)) / gcd(j+1, (a/gcd(a, h)))) * (ja) ]) / a then let a(h) = d(h, j) = lcm( f(h, j, 1) ... f(h, j, h) ) %e A098135 a(2) = 5 = lcm(5,1) %e A098135 a(3) = 9 = lcm(9,3,1) %e A098135 a(5) = 2618 = lcm(17,7,11,2,1) %e A098135 a(11) = 32152414840 = (41,19,35,8,29,13,23,5,17,7,1) %Y A098135 Cf. A091342, A025558, A097382. %K A098135 nonn %O A098135 0,2 %A A098135 Scott C. Macfarlan (scottmacfarlan(AT)covance.com), Sep 27 2004