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 A098351 #5 Jul 05 2012 07:03:49 %S A098351 16,24,24,32,36,32,36,48,48,36,40,54,64,54,40,48,60,72,72,60,48,56,72, %T A098351 80,81,80,72,56,60,84,96,90,90,96,84,60,64,90,112,108,100,108,112,90, %U A098351 64,72,96,120,126,120,120,126,120,96,72,80,108,128,135,140,144,140,135,128 %N A098351 Multiplication table of the composites read by antidiagonals. %F A098351 T(n,k) = A002808(n)*A002808(k). %e A098351 16, 24, 32, 36, 40, 48, 56, 60, 64, 72,... %e A098351 24, 36, 48, 54, 60, 72, 84, 90, 96,108,... %e A098351 32, 48, 64, 72, 80, 96,112,120,128,144,... %e A098351 36, 54, 72, 81, 90,108,126,135,144,162,... %e A098351 40, 60, 80, 90,100,120,140,150,160,180,... %e A098351 48, 72, 96,108,120,144,168,180,192,216,... %Y A098351 Cf. A003991, A098350. %K A098351 nonn,tabl %O A098351 1,1 %A A098351 Douglas Stones (dssto1(AT)student.monash.edu.au), Sep 04 2004