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 A244687 #6 Jul 05 2014 17:05:54
%S A244687 1,7,5,6,1,0,3,1,7,1,1,5,2,2,7,3,3,3,4,5,3,6,6,7,8,8,5,0,5,1,2,2,7,3,
%T A244687 0,5,1,6,0,8,7,9,2,1,5,3,6,5,5,7,2,9,7,1,0,3,1,5,0,7,7,0,2,2,5,5,6,8,
%U A244687 5,0,2,3,7,6,0,9,1,2,0,5,7,8,2,2,5,5,6,8,5,2,2,6,7,9,0,3,1,7,0,0,0,4,0,5,1
%N A244687 The spiral of Champernowne read by the Southwest ray.
%F A244687 See A244677 formula section.
%e A244687 See A244677 for the spiral of David Gawen Champernowne.
%t A244687 almostNatural[n_, b_] := Block[{m = 0, d = n, i = 1, l, p}, While[m <= d, l = m; m = (b - 1) i*b^(i - 1) + l; i++]; i--; p = Mod[d - l, i]; q = Floor[(d - l)/i] + b^(i - 1); If[p != 0, IntegerDigits[q, b][[p]], Mod[q - 1, b]]]; f[n_] := 4n^2 - 6n + 3 (* see A244677 formula section *); Array[ almostNatural[ f@#, 10] &, 105]
%Y A244687 Cf. A033307, A054569, A033952, A244677-A244688, A244690-A244692.
%K A244687 nonn,easy
%O A244687 1,2
%A A244687 _Robert G. Wilson v_, Jul 04 2014