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 A034082 a(n) = least integer m such that the part after the decimal point of the n-th root of m starts with the digit 5. 6
 21, 4, 6, 8, 12, 18, 26, 39, 58, 87, 130, 195, 292, 438, 657, 986, 1478, 2217, 3326, 4988, 7482, 11223, 16835, 25252, 37877, 56816, 85223, 127835, 191752, 287627, 431440, 647160, 970740, 1456110, 2184165, 3276247, 4914370, 7371555, 11057333 (list; graph; refs; listen; history; text; internal format)
 OFFSET 2,1 LINKS Table of n, a(n) for n=2..40. FORMULA For n > 2: a(n) = ceiling((3/2)^n) = A002379(n) + 1. - Henry Bottomley, May 02 2001 EXAMPLE a(25)=25252 -> 25252^(1/25)=1.{5}000019762083... PROG (Python) def A034082(n): return (3**n>>n)+1 if n > 2 else 21 # Chai Wah Wu, Sep 21 2022 CROSSREFS Cf. A034062, A034072, A002379, A061418, A061419. Sequence in context: A040428 A040429 A082128 * A040427 A070988 A358268 Adjacent sequences: A034079 A034080 A034081 * A034083 A034084 A034085 KEYWORD nonn,base AUTHOR Patrick De Geest, Sep 15 1998 EXTENSIONS Definition clarified by N. J. A. Sloane, May 24 2021 STATUS approved

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Last modified July 13 18:16 EDT 2024. Contains 374285 sequences. (Running on oeis4.)