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 A061426 Geometric mean of the digits = 2. In other words the product of the digits is = 2^k where k is the number of digits. 8
 2, 14, 22, 41, 118, 124, 142, 181, 214, 222, 241, 412, 421, 811, 1128, 1144, 1182, 1218, 1224, 1242, 1281, 1414, 1422, 1441, 1812, 1821, 2118, 2124, 2142, 2181, 2214, 2222, 2241, 2412, 2421, 2811, 4114, 4122, 4141, 4212, 4221, 4411, 8112, 8121, 8211 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..10000 EXAMPLE 124 is a term as the geometric mean of digits is (1*2*4) = 8 = 2^3. PROG (Haskell) a061426 n = a061426_list !! (n-1) a061426_list = g [1] where    g ds = if product ds == 2 ^ length ds           then foldr (\d v -> 10 * v + d) 0 ds : g (s ds) else g (s ds)    s [] = [1]; s (8:ds) = 1 : s ds; s (d:ds) = 2*d : ds -- Reinhard Zumkeller, Jan 13 2014 CROSSREFS Cf. A061427-A061430. A069512 gives another version. Cf. A028846. Sequence in context: A073143 A066613 A074312 * A190045 A247035 A069512 Adjacent sequences:  A061423 A061424 A061425 * A061427 A061428 A061429 KEYWORD nonn,base,easy AUTHOR Amarnath Murthy, May 03 2001 EXTENSIONS More terms from Erich Friedman, May 08 2001 STATUS approved

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Last modified January 23 22:16 EST 2020. Contains 331177 sequences. (Running on oeis4.)