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Search: id:A083705
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A083705 a(n) = 2*a(n-1) - 1. +0
1
10, 19, 37, 73, 145, 289, 577, 1153, 2305, 4609, 9217, 18433, 36865, 73729, 147457, 294913, 589825, 1179649, 2359297, 4718593, 9437185, 18874369, 37748737, 75497473, 150994945, 301989889, 603979777, 1207959553, 2415919105, 4831838209, 9663676417, 19327352833 (list; graph; listen)
OFFSET

0,1

FORMULA

a(n)= 1+9*2^n = 3*a(n-1)-2*a(n-2). G.f.: -(-10+11*x)/((2*x-1)*(x-1)). [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 01 2009]

CROSSREFS

Sequence in context: A109334 A085728 A127194 this_sequence A082659 A088409 A065198

Adjacent sequences: A083702 A083703 A083704 this_sequence A083706 A083707 A083708

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Jun 15 2003

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Last modified November 24 14:25 EST 2009. Contains 167438 sequences.


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