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A196305 a(n) = 15*2^n - 1. 5
14, 29, 59, 119, 239, 479, 959, 1919, 3839, 7679, 15359, 30719, 61439, 122879, 245759, 491519, 983039, 1966079, 3932159, 7864319, 15728639, 31457279, 62914559, 125829119, 251658239, 503316479, 1006632959, 2013265919, 4026531839, 8053063679, 16106127359 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
COMMENTS
Primes of this sequence are in A196940.
LINKS
FORMULA
a(n) = 15*2^n - 1.
a(n) = A033484(n+1) + A083705(n).
From Philippe Deléham, Feb 17 2014: (Start)
a(n) = 2*a(n-1) + 1.
a(n) = 3*a(n-2) - 2*a(n-2). (End)
a(n) = A110286(n) - 1. - Philippe Deléham, Feb 17 2014
PROG
(Magma) [15*2^n -1 : n in [0..50]];
(PARI) a(n)=15<<n-1 \\ Charles R Greathouse IV, Oct 08 2011
CROSSREFS
Cf. A033484, A083705, A110286 (first differences).
Sequence in context: A124681 A195145 A263119 * A041386 A041388 A042617
KEYWORD
nonn,easy
AUTHOR
Brad Clardy, Oct 07 2011
STATUS
approved

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Last modified March 28 11:59 EDT 2024. Contains 371254 sequences. (Running on oeis4.)