Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A074154
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A074154 Largest n-digit power of n; or 0 if no such number exists. +0
1
1, 64, 729, 4096, 78125, 279936, 5764801, 16777216, 387420489, 1000000000, 25937424601, 743008370688, 1792160394037, 56693912375296, 129746337890625, 4503599627370496, 0, 374813367582081024, 0, 32768000000000000000, 0 (list; graph; listen)
OFFSET

1,2

COMMENT

From a(6) onwards the sequence is A074153.

Where a(n)=0 for n: 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 40, ..., . [From Robert G. Wilson v (rgwv(AT)rgwv.com), Jun 30 2009]

MATHEMATICA

f[n_] := Block[{a = n^Ceiling[ Log[n, 10^n] - 1]}, If[ Floor[ Log[10, a] + 1] == n, a, 0]]; f[1] = 1; Array[f, 21] [From Robert G. Wilson v (rgwv(AT)rgwv.com), Jun 30 2009]

CROSSREFS

Cf. A074154.

Sequence in context: A055015 A001014 A050753 this_sequence A153160 A113851 A046455

Adjacent sequences: A074151 A074152 A074153 this_sequence A074155 A074156 A074157

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 29 2002

EXTENSIONS

Corrected and extended by Robert G. Wilson v (rgwv(AT)rgwv.com), Jun 30 2009

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified December 16 17:18 EST 2009. Contains 170825 sequences.


AT&T Labs Research