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 A030567 Triangle T(n,k): Write n in base 6, reverse order of digits, to get row n. 29
 0, 1, 2, 3, 4, 5, 0, 1, 1, 1, 2, 1, 3, 1, 4, 1, 5, 1, 0, 2, 1, 2, 2, 2, 3, 2, 4, 2, 5, 2, 0, 3, 1, 3, 2, 3, 3, 3, 4, 3, 5, 3, 0, 4, 1, 4, 2, 4, 3, 4, 4, 4, 5, 4, 0, 5, 1, 5, 2, 5, 3, 5, 4, 5, 5, 5, 0, 0, 1, 1, 0, 1, 2, 0, 1, 3, 0, 1, 4, 0, 1, 5, 0, 1, 0, 1, 1, 1, 1, 1, 2 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS If columns are numbered starting with k=0, then T(n,k) contains the coefficient of 6^k in n's base-6 expansion. - M. F. Hasler, Jul 21 2013 LINKS Table of n, a(n) for n=0..90. MATHEMATICA Flatten[Table[Reverse[IntegerDigits[n, 6]], {n, 0, 50}]] (* Harvey P. Dale, Sep 27 2015 *) PROG (PARI) A030567(n, k=-1)=/*k<0&&error("Flattened sequence not yet implemented.")*/n\6^k%6 \\ Assuming that columns start with k=0, cf. comment. TO DO: implement flattened sequence, such that A030567(n)=a(n). - M. F. Hasler, Jul 21 2013 CROSSREFS See A030548 for a quite complete list of crossreferences. Cf. A030568 - A030573 for positions of a given digit. Cf. A030575 - A030580 for run lengths, A030581 - A030585 for more. Row sums (same as those of A030548) are in A053827. Cf. A030308, A030341, A030386, A031235, A031007, A031045, A031087, A031298 for the base-2 to base-10 analogs. Sequence in context: A347728 A336206 A303534 * A049265 A010875 A260187 Adjacent sequences: A030564 A030565 A030566 * A030568 A030569 A030570 KEYWORD nonn,base,tabf,less AUTHOR Clark Kimberling EXTENSIONS Initial 0 and better name by Philippe Deléham, Oct 20 2011. Edited and crossrefs added by M. F. Hasler, Jul 21 2013 STATUS approved

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Last modified December 11 14:52 EST 2023. Contains 367727 sequences. (Running on oeis4.)