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 A288040 Integers whose number of distinct decimal digits is prime. 0
 10, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 100, 101 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Differs from A139819 (which contains, for example, 1234, a number with 4 distinct decimal digits). - R. J. Mathar, Jun 14 2017 LINKS MATHEMATICA Select[Range@ 101, PrimeQ@ Count[DigitCount[#], _?(# != 0 &)] &] (* Michael De Vlieger, Jun 06 2017 *) PROG (Python) from sympy import isprime print([n for n in range(1, 100) if isprime(len(set(str(n))))]) (PARI) isok(m) = isprime(#Set(digits(m))); \\ Michel Marcus, May 10 2020 CROSSREFS Union of A031955 and A031962 and .... Sequence in context: A285687 A139704 A139819 * A031955 A029742 A043638 Adjacent sequences:  A288037 A288038 A288039 * A288041 A288042 A288043 KEYWORD base,nonn AUTHOR Jonathan Frech, Jun 04 2017 STATUS approved

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Last modified November 29 04:03 EST 2020. Contains 338756 sequences. (Running on oeis4.)