login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A069658 a(1) = 1; a(n) = smallest nontrivial n-digit perfect power. 0
1, 16, 121, 1024, 10201, 100489, 1002001, 10004569, 100020001, 1000014129, 10000200001, 100000147984, 1000002000001, 10000002149284, 100000020000001, 1000000025191729, 10000000200000001, 100000000621806289, 1000000002000000001 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

Powers of 10 are not allowed.

FORMULA

a(n) = (floor(sqrt(10)^(n-1))+1)^2 = (A017934(n-1)+1)^2. - Vladeta Jovovic (vladeta(AT)eunet.rs), Jun 30 2002

CROSSREFS

Cf. A061432, A017936.

Sequence in context: A191902 A014765 A081071 * A069667 A104265 A068880

Adjacent sequences:  A069655 A069656 A069657 * A069659 A069660 A069661

KEYWORD

nonn,base

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 04 2002

EXTENSIONS

More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Jan 28 2003

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 16 19:23 EST 2012. Contains 205945 sequences.