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 A131888 #2 Mar 31 2012 13:23:38 %S A131888 1,1,2,1,4,2,6,2,8,3,12,4,30,5,16,5,24,7,36,9,60,11,210,15,32,7,48,12, %T A131888 72,16,120,21,180,26,420,36,2310,52,64,11,96,19,144,29,240,38,216,31, %U A131888 360,52,840,74,900,66,1260,92,4620,135,30030,203 %N A131888 Follow each least prime signature by the corresponding value in the array A096443. %e A131888 Array A096443 begins %e A131888 1..1..2..3...5...7..11..15...22...30 %e A131888 .....2..4...7..12..19..30...45...67 %e A131888 ............9..16..29..47...77..118 %e A131888 ........5..11..21..38..64..105..165 %e A131888 etc %e A131888 so the sequence begins 1 1 2 1 4 2 6 2 8 3 12 4 30 5 ... %Y A131888 Cf. A001055 A025487 A080577 A096443 A129306 A131822. %K A131888 easy,nonn %O A131888 0,3 %A A131888 _Alford Arnold_, Jul 23 2007