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 A051883 a(n) is the smallest number such that the concatenation of a(1)a(2)a(3)...a(n) is divisible by n. 12
 1, 0, 2, 0, 0, 0, 5, 6, 4, 0, 5, 16, 2, 4, 0, 0, 14, 4, 9, 20, 16, 26, 13, 6, 25, 22, 34, 4, 14, 0, 17, 28, 42, 22, 20, 24, 31, 44, 36, 0, 15, 24, 2, 8, 20, 36, 8, 16, 32, 50, 35, 6, 47, 58, 40, 16, 4, 26, 12, 40, 51, 52, 38, 4, 5, 12, 74, 56, 2, 20, 11, 68, 44, 58, 75, 24, 7, 38, 87, 20 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 REFERENCES A. Murthy, Exploring some new ideas on Smarandache type sets, functions and sequences, Smarandache Notions Journal Vol. 11, N 1-2-3 Spring 2000 LINKS Paul Tek, Table of n, a(n) for n = 1..10000 EXAMPLE For example the third term is 2 because 102 is divisible by 3. PROG (Haskell) import Data.List (findIndex) import Data.Maybe (fromJust) a051883 n = a051883_list !! (n-1) a051883_list = 1 : f 2 "1" where    f :: Integer -> String -> [Int]    f x zs = y : f (x + 1) (zs ++ show y) where      y = fromJust \$ findIndex          ((== 0) . (`mod` x) . read . (zs ++)) \$ map show [0..] -- Reinhard Zumkeller, May 26 2013 CROSSREFS See A082399 for another version. Sequence in context: A222898 A113044 A082399 * A132792 A136572 A262679 Adjacent sequences:  A051880 A051881 A051882 * A051884 A051885 A051886 KEYWORD nonn,easy,nice,base AUTHOR Felice Russo, Dec 15 1999 EXTENSIONS Expanded and corrected from the Murthy paper. More terms from Michael Lugo (mlugo(AT)thelabelguy.com), Dec 22 1999 Further terms from David Wasserman, Mar 05 2002 STATUS approved

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Last modified December 15 17:03 EST 2019. Contains 330000 sequences. (Running on oeis4.)