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 A089985 a(n)=A089709(n+1)/A089709(n). 4
 2, 3, 6, 10, 18, 34, 66, 130, 258, 514, 1026, 2050, 4098, 8194, 16386, 32770, 65538, 131074, 262146, 524290, 1048578, 2097154, 4194306, 8388610, 16777218, 33554434, 67108866, 134217730, 268435458, 536870914, 1073741826, 2147483650 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..2000 FORMULA a(n) = 2^(n-1)+2, n>2. MATHEMATICA Join[{2, 3}, Rest[2^Range[40]+2]] (* Harvey P. Dale, Sep 19 2011 *) CROSSREFS Cf. A089709. Essentially the same as A056469. Sequence in context: A054152 A240802 A339808 * A191518 A217382 A244742 Adjacent sequences:  A089982 A089983 A089984 * A089986 A089987 A089988 KEYWORD nonn,easy AUTHOR Ray Chandler, Nov 21 2003 STATUS approved

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Last modified September 26 14:17 EDT 2021. Contains 347668 sequences. (Running on oeis4.)