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 A043536 Number of distinct base-9 digits of n. 3
 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 3, 3, 3, 3, 3, 3, 3, 2, 1, 2, 2, 2, 2, 2, 2, 2, 3, 2, 2, 3, 3, 3, 3 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,9 LINKS Antti Karttunen, Table of n, a(n) for n = 1..66430 EXAMPLE As 731 = 1*(9^3) + 0*(9^2) + 0*(9^1) + 2*(9^0), it is written in base 9 (A007095) as "1002". There are three kinds of digits present, thus a(731) = 3. - Antti Karttunen, Dec 22 2017 MATHEMATICA Table[Count[DigitCount[n, 9], +_?(#>0&)], {n, 100}] (* Harvey P. Dale, Apr 30 2015 *) PROG (PARI) A043536(n) = length(vecsort(digits(n, 9), , 8)); \\ Antti Karttunen, Dec 22 2017 CROSSREFS Cf. A007095, A043283, A044931, A044940, A044949. Sequence in context: A276034 A111626 A297777 * A043561 A297778 A043562 Adjacent sequences:  A043533 A043534 A043535 * A043537 A043538 A043539 KEYWORD nonn,base AUTHOR EXTENSIONS More terms from Antti Karttunen, Dec 22 2017 STATUS approved

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Last modified April 10 21:47 EDT 2021. Contains 342856 sequences. (Running on oeis4.)