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 A178787 Number of numbers <= n having distinct digits in their decimal representation, cf. A010784. 4
 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 61, 62, 63, 64, 65, 66 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS a(m)<=a(n) for m=9876543210; a(A010784(n)) = n; a(A109303(n)) = a(A109303(n)-1); partial sums of A178788. LINKS R. Zumkeller, Table of n, a(n) for n = 0..25000 Eric Weisstein's World of Mathematics, Digit EXAMPLE a(12) = #{0,1,2,3,4,5,6,7,8,9,10,12} = 12; a(24) = a(12) + #{13,14,15,16,17,18,19,20,21,23,24} = 23. CROSSREFS Sequence in context: A121759 A180613 A072778 * A034326 A053833 A167973 Adjacent sequences:  A178784 A178785 A178786 * A178788 A178789 A178790 KEYWORD base,nonn AUTHOR Reinhard Zumkeller, Jun 30 2010 STATUS approved

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