A035072 - OEIS

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A035072

a(n) is root of square starting with digit 5: first term of runs.

2

23, 71, 224, 708, 2237, 7072, 22361, 70711, 223607, 707107, 2236068, 7071068, 22360680, 70710679, 223606798, 707106782, 2236067978, 7071067812, 22360679775, 70710678119, 223606797750, 707106781187, 2236067977500

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

OFFSET

2,1

LINKS

Table of n, a(n) for n=2..24.

FORMULA

a(n) = ceiling(sqrt(5*10^n)), n > 1.

MATHEMATICA

Table[Ceiling @ Sqrt[5 * 10^n], {n, 2 , 24}] (* Amiram Eldar, Oct 08 2019 *)

CROSSREFS

Cf. A067475 (squares), A035076 (2..9).

Sequence in context: A248877 A321356 A139878 * A201716 A269521 A044161

Adjacent sequences: A035069 A035070 A035071 * A035073 A035074 A035075

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Nov 15 1998

STATUS

approved