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 A244683 The spiral of Champernowne read by the Northwest ray. 0
 1, 5, 3, 3, 7, 5, 7, 0, 2, 1, 7, 9, 2, 6, 9, 3, 7, 2, 4, 1, 7, 6, 8, 4, 8, 7, 3, 6, 1, 8, 7, 8, 1, 6, 3, 2, 3, 6, 1, 8, 7, 8, 1, 6, 3, 2, 3, 6, 1, 8, 7, 8, 1, 6, 3, 2, 3, 6, 1, 8, 7, 8, 1, 6, 3, 2, 3, 6, 1, 8, 7, 8, 1, 6, 3, 2, 3, 6, 1, 8, 7, 8, 1, 6, 3, 2, 3, 6, 1, 8, 7, 8, 1, 6, 3, 2, 3, 6, 1, 1, 0, 1, 5, 7, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS FORMULA See A244677 formula section. EXAMPLE See A244677 for the spiral of David Gawen Champernowne. MATHEMATICA 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 - 8n + 5 (* see A244677 formula section *); Array[ almostNatural[ f@#, 10] &, 105] CROSSREFS Cf. A033307, A053755, A033952, A244677-A244688, A244690-A244692. Sequence in context: A019624 A120275 A021656 * A263157 A084538 A263492 Adjacent sequences:  A244680 A244681 A244682 * A244684 A244685 A244686 KEYWORD nonn,easy AUTHOR Robert G. Wilson v, Jul 04 2014 STATUS approved

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Last modified January 16 21:37 EST 2019. Contains 319206 sequences. (Running on oeis4.)