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 A081608 Number of numbers <= n having no 0 in their ternary representation. 5
 0, 1, 2, 2, 3, 4, 4, 5, 6, 6, 6, 6, 6, 7, 8, 8, 9, 10, 10, 10, 10, 10, 11, 12, 12, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 16, 16, 17, 18, 18, 18, 18, 18, 19, 20, 20, 21, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23, 24, 24, 25, 26, 26, 26, 26 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS a(n) + A081607(n) = n+1. LINKS PROG (PARI) first(n)=my(s, t); vector(n, k, t=Set(digits(k, 3)); s+=!!t[1]) \\ Charles R Greathouse IV, Sep 02 2015 CROSSREFS Cf. A007089, A077267, A061392, A081611. Sequence in context: A333942 A065361 A089792 * A096532 A335380 A077773 Adjacent sequences:  A081605 A081606 A081607 * A081609 A081610 A081611 KEYWORD nonn AUTHOR Reinhard Zumkeller, Mar 23 2003 STATUS approved

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Last modified April 15 04:37 EDT 2021. Contains 342975 sequences. (Running on oeis4.)