A114762 a(n) = floor(3^(1/2)*10^n)^2.

1, 289, 29929, 2999824, 299982400, 29999972025, 2999997202500, 299999997378064, 29999999737806400, 2999999998029351249, 299999999976140205625, 29999999999692481531536, 2999999999996960966074624, 299999999999973224736673344

Offset

0,2

Comments

Largest square < 3*10^(2n).

Links

Ivan Panchenko, Table of n, a(n) for n = 0..100

Example

a(1) = floor(3^(1/2)*10)^2 = 17^2 = 289.

Mathematica

Table[Floor[3^(1/2)*10^n]^2, {n, 0, 20}] (* Stefan Steinerberger, Apr 14 2006 *)
Floor[Sqrt[3] 10^Range[0, 20]]^2 (* Harvey P. Dale, Sep 25 2021 *)

Crossrefs

Cf. A114761.

Sequence in context: A156575 A296404 A156161 * A226747 A260866 A252360

Adjacent sequences: A114759 A114760 A114761 * A114763 A114764 A114765

Keyword

base,nonn,less

Author

Amarnath Murthy, Nov 17 2005

Extensions

More terms from Stefan Steinerberger, Apr 14 2006

Status

approved