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 A095834 #4 Dec 08 2015 08:51:13 %S A095834 0,2,0,6,3,0,12,8,4,0,20,15,10,5,0,30,24,18,12,6,0,42,35,28,21,14,7,0, %T A095834 56,48,40,32,24,16,8,0,72,63,54,45,36,27,18,9,0,90,80,70,60,50,40,30, %U A095834 20,10,0,110,99,88,77,66,55,44,33,22,11,0,132,120,108,96,84,72,60,48,36,24 %N A095834 Triangle read by rows: T(n,k) = (n-k)*n, n>=1, 1<=k<=n. %e A095834 0 %e A095834 2 0 %e A095834 6 3 0 %e A095834 12 8 4 0 %e A095834 20 15 10 5 0 %e A095834 30 24 18 12 6 0 %e A095834 42 35 28 21 14 7 0 %e A095834 56 48 40 32 24 16 8 0 %Y A095834 Cf. A006002 (row sums). %K A095834 easy,nonn,tabl %O A095834 1,2 %A A095834 Herman Jamke (hermanjamke(AT)fastmail.fm), Jul 10 2004