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 A163351 #2 Mar 30 2012 17:36:44 %S A163351 0,0,1,0,1,2,0,1,2,3,0,1,2,3,4,0,1,2,3,4,5,0,1,2,3,4,5,6,0,1,2,3,4,5, %T A163351 6,7,0,1,2,3,4,5,6,7,8,0,1,2,3,4,5,6,7,8,9,0,0,0,0,0,0,0,0,0,0,10,0,1, %U A163351 1,1,1,1,1,1,1,1,10,11,0,1,2,2,2,2,2,2,2,2,10,11,12,0,1,2,3,3,3,3,3,3,3,10 %N A163351 Triangle T(n,k) = m, 0<=k<=n, read by rows, where each decimal digit d of the integer m is the minimum of the corresponding decimal digits of n and k. %C A163351 The number k is left-padded with zeros as necessary for comparison with n. %C A163351 Clearly, for all n>=0, T(n,0) = 0 and T(n,n) = n. %C A163351 For all A051885(n), T(A051885(n),k) = k; no other rows have this pattern. %e A163351 T(10,1) = 0 = a(56) as 0<1 in both tens and units positions. Sequence first differs from A002262 here. %e A163351 T(104,53) = 3 as 3<4, 0<5, and 0<1. %Y A163351 Cf. A163352, A002262, A080098. %K A163351 base,easy,nonn,tabl %O A163351 0,6 %A A163351 _Rick L. Shepherd_, Jul 25 2009