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A096233 Number of digits of the 10^n-th tribonacci number (A000073). 0
2, 26, 264, 2646, 26464, 264649, 2646494, 26464944, 264649443, 2646494434, 26464944348, 264649443484, 2646494434842, 26464944348425, 264649443484250, 2646494434842508, 26464944348425087 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

a(n)/10^n tends towards log[10](rho) = .26464944348425087191..., where rho is the real root of x^3-x^2-x-1 = 0. - Vladeta Jovovic, Sep 01 2004

LINKS

Table of n, a(n) for n=0..16.

MATHEMATICA

rho=1/3*((19+3*Sqrt[33])^(1/3)+(19-3*Sqrt[33])^(1/3)+1); triboappr[n_]:=N[(rho-1)/(4rho-6)*rho^(n-3), 3000]; Table[MantissaExponent[triboappr[10^i]][[2]], {i, 1, 7}]

CROSSREFS

Cf. A068070.

Sequence in context: A289263 A296600 A187252 * A126673 A057351 A245999

Adjacent sequences:  A096230 A096231 A096232 * A096234 A096235 A096236

KEYWORD

nonn,easy,base

AUTHOR

Michael Taktikos, Aug 09 2004

STATUS

approved

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Last modified December 10 23:33 EST 2018. Contains 318049 sequences. (Running on oeis4.)