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A113876 a(n) = a(n-1) + 2^(k(n)), where k(n) is the n-th term of the sequence formed by k(1)=0 together with the numbers A042964. 1
1, 5, 13, 77, 205, 1229, 3277, 19661, 52429, 314573, 838861, 5033165, 13421773, 80530637, 214748365, 1288490189, 3435973837, 20615843021, 54975581389, 329853488333, 879609302221, 5277655813325, 14073748835533, 84442493013197 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..300

FORMULA

G.f.: (1+x-8*x^2)/(2*(-1+x)*(-1+4*x)*(1+4*x)). - Vaclav Kotesovec, Nov 28 2012

CROSSREFS

Cf. A099974, A112627, A080355, A080567, A099969, A099970, A099971.

Sequence in context: A081525 A027612 A027457 * A214536 A324418 A165262

Adjacent sequences:  A113873 A113874 A113875 * A113877 A113878 A113879

KEYWORD

nonn

AUTHOR

Artur Jasinski, Jan 27 2006

EXTENSIONS

Edited with better definition and offset corrected by Omar E. Pol, Jan 08 2009

STATUS

approved

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Last modified July 18 19:00 EDT 2019. Contains 325144 sequences. (Running on oeis4.)