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 A030998 Write n in base 7 and juxtapose. 21
 0, 1, 2, 3, 4, 5, 6, 1, 0, 1, 1, 1, 2, 1, 3, 1, 4, 1, 5, 1, 6, 2, 0, 2, 1, 2, 2, 2, 3, 2, 4, 2, 5, 2, 6, 3, 0, 3, 1, 3, 2, 3, 3, 3, 4, 3, 5, 3, 6, 4, 0, 4, 1, 4, 2, 4, 3, 4, 4, 4, 5, 4, 6, 5, 0, 5, 1, 5, 2, 5, 3, 5, 4, 5, 5, 5, 6, 6, 0, 6, 1, 6, 2, 6, 3, 6, 4, 6, 5, 6, 6 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS An irregular table in which the n-th row lists the base 7 digits of n. - Jason Kimberley, Dec 07 2012 The base 7 Champernowne constant: it is normal in base 7. - Jason Kimberley, Dec 07 2012 LINKS MATHEMATICA Flatten[IntegerDigits[#, 7]&/@Range[0, 60]]  (* Harvey P. Dale, Mar 04 2011 *) 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]]]; Array[ almostNatural[#, 7] &, 105, 0] (* Robert G. Wilson v, Jun 29 2014 *) PROG (MAGMA) [0]cat &cat[Reverse(IntegerToSequence(n, 7)):n in[1..31]]; // Jason Kimberley, Dec 07 2012 CROSSREFS Tables in which the n-th row lists the base b digits of n: A030190 and A030302 (b=2), A003137 and A054635 (b=3), A030373 (b=4), A031219 (b=5), A030548 (b=6), this sequence (b=7), A031035 and A054634 (b=8), A031076 (b=9), A007376 and A033307 (b=10). - Jason Kimberley, Dec 06 2012 Cf. A007093. Sequence in context: A265520 A256297 A256307 * A346691 A255827 A277545 Adjacent sequences:  A030995 A030996 A030997 * A030999 A031000 A031001 KEYWORD nonn,base,cons,easy,tabf AUTHOR STATUS approved

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Last modified November 28 06:42 EST 2021. Contains 349401 sequences. (Running on oeis4.)