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 A129500 #2 Mar 30 2012 17:27:53 %S A129500 2,3,5,10,0,15,12,11,16,1,25,33,18,26,24,58,57,7,1,18,12,17,20,44,97, %T A129500 23,49,85,40,25,94,0,81,94,49,10,117,90,49,167,112,24,113,38,92,84,78, %U A129500 110,105,189,207,45,232,225,58,45,90,51,24,159,228,74,297,52,216,190,191 %N A129500 a(n) = (A116151(n+1) - A116151(n)) / A002110(n). %e A129500 n = 3: A116151(4) - A116151(3) = 173 - 23 = 150, product of first 3 primes is 2*3*5 = 30. Hence a(3) = 150 / 30 = 5. %Y A129500 Cf. A116151, A002110 (product of first n primes). %K A129500 nonn %O A129500 1,1 %A A129500 _Klaus Brockhaus_, Apr 18 2007