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 A111467 #6 Dec 05 2013 19:57:05 %S A111467 1,2,3,6,10,14,24,40,54,56,120,168,264,270,280,720,1008,1200,1584, %T A111467 1620,1872,5040,7920,8400,9360,11088,11340,11760,40320,63360,67200, %U A111467 74880,88704,94080,97920,104832,362880,570240,673920,798336,881280,943488,984960,1192320,1224720 %N A111467 The following triangle contains n smallest numbers with the prime signature of n!. Sequence contains the triangle by rows. %C A111467 1 %C A111467 2 3 %C A111467 6 10 14 %C A111467 24 40 54 56 %C A111467 ... %C A111467 n! is the smallest number with that prime signature. %e A111467 4! = 24 = 2^3*3, 40 = 2^3*5, 54=3^3*2, 56=2^3*7 %e A111467 Hence the row corresponding n = 4 is 24,40,54,56. %Y A111467 Cf. A111468, A111469. %K A111467 easy,nonn,tabl %O A111467 1,2 %A A111467 _Amarnath Murthy_, Aug 05 2005 %E A111467 More terms from _R. J. Mathar_, May 08 2007