A017934 - OEIS

A017934

Powers of sqrt(10) rounded down.

1, 3, 10, 31, 100, 316, 1000, 3162, 10000, 31622, 100000, 316227, 1000000, 3162277, 10000000, 31622776, 100000000, 316227766, 1000000000, 3162277660, 10000000000, 31622776601, 100000000000

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

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

Adjacent sequences: A017931 A017932 A017933 * A017935 A017936 A017937

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved