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 A053834 Sum of digits of n written in base 14. 3
 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS a(n) = A138530(n,14) for n > 13. - Reinhard Zumkeller, Mar 26 2008 LINKS Robert Walker, Self Similar Sloth Canon Number Sequences Eric Weisstein's World of Mathematics, Digit Sum FORMULA a(0)=0, a(14n+i)=a(n)+i 0<=i<=13; a(n)=n-13*(sum(k>0, floor(n/14^k)). - Benoit Cloitre, Dec 19 2002 EXAMPLE a(20) = 1 + 6 = 7 because 20 is written as "16" in base 14. MATHEMATICA Array[Total[IntegerDigits[#, 14]]&, 90, 0] (* Harvey P. Dale, Jul 16 2011 *) PROG (PARI) a(n)=if(n<1, 0, if(n%14, a(n-1)+1, a(n/14))) CROSSREFS Cf. A000120, A007953. Sequence in context: A071523 A297244 A070696 * A297245 A043273 A268982 Adjacent sequences:  A053831 A053832 A053833 * A053835 A053836 A053837 KEYWORD base,nonn AUTHOR Henry Bottomley, Mar 28 2000 STATUS approved

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Last modified August 15 07:26 EDT 2018. Contains 313756 sequences. (Running on oeis4.)