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A017934
Powers of sqrt(10) rounded down.
10
1, 3, 10, 31, 100, 316, 1000, 3162, 10000, 31622, 100000, 316227, 1000000, 3162277, 10000000, 31622776, 100000000, 316227766, 1000000000, 3162277660, 10000000000, 31622776601, 100000000000
OFFSET
0,2
LINKS
FORMULA
a(n)=floor(sqrt(10^n)). - Zak Seidov
MATHEMATICA
Floor[Sqrt[10^Range[0, 100]]] (* Zak Seidov *)
PROG
(Magma) A017934 := func< n | Isqrt(10^n) >; // Jason Kimberley, Aug 19 2011
(Magma) A017934 := func< n | Floor(Sqrt(RealField(n)!10^n)) >; // Jason Kimberley, Aug 19 2011
(PARI) a(n)=sqrtint(10^n) \\ Charles R Greathouse IV, Nov 18 2011
CROSSREFS
Cf. A010467 Decimal expansion of sqrt(10), A131581, A136582, A175733, A175734.
Sequence in context: A002160 A214839 A114487 * A005510 A005725 A302287
KEYWORD
nonn
AUTHOR
STATUS
approved