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 A185879 #10 Jul 21 2017 02:48:46
%S A185879 1,2,0,4,2,0,6,2,2,0,8,2,2,2,0,10,2,2,2,2,0,12,2,2,2,2,2,0,14,2,2,2,2,
%T A185879 2,2,0,16,2,2,2,2,2,2,2,0,18,2,2,2,2,2,2,2,2,0,20,2,2,2,2,2,2,2,2,2,0,
%U A185879 22,2,2,2,2,2,2,2,2,2,2,0,24,2,2,2,2,2,2,2,2,2,2,2,0,26,2,2,2,2,2,2,2,2,2,2,2,2,0
%N A185879 Weight array of A185877, by antidiagonals.
%C A185879 A member of the accumulation chain ...< A185879 < A185877 < A185878 < A185880 <...
%C A185879 See A144112 for the definitions of weight array and accumulation array.
%H A185879 G. C. Greubel, <a href="/A185879/b185879.txt">Table of n, a(n) for the first 50 rows, flattened</a>
%F A185879 T(1,k) = 2*(k-1) for k>=1; T(n,1)=0 for n>1; T(n,k)=2 otherwise.
%e A185879 Northwest corner:
%e A185879 1...2...4...6...8...10...12...14
%e A185879 0...2...2...2...2...2....2....2
%e A185879 0...2...2...2...2...2....2....2
%e A185879 0...2...2...2...2...2....2....2
%e A185879 0...2...2...2...2...2....2....2
%t A185879 f[n_, k_] := 2; f[1, k_] := 2*(k - 1); f[n_, 1] := 0; f[1, 1] := 1;
%t A185879 TableForm[Table[f[n, k], {n, 1, 7}, {k, 1, 7}]] Table[f[n - k + 1, k], {n, 5}, {k, n, 1, -1}] // Flatten (* _G. C. Greubel_, Jul 21 2017 *)
%Y A185879 Cf. A144112, A185877.
%K A185879 nonn,tabl
%O A185879 1,2
%A A185879 _Clark Kimberling_, Feb 05 2011