Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A081327
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A081327 Smallest 3-smooth number m such that n-m is also 3-smooth, a(n)=0 if no such 3-smooth number exists. +0
4
0, 1, 1, 1, 1, 2, 1, 2, 1, 1, 2, 3, 1, 2, 3, 4, 1, 2, 1, 2, 3, 4, 0, 6, 1, 2, 3, 1, 2, 3, 4, 8, 1, 2, 3, 4, 1, 2, 3, 4, 9, 6, 16, 8, 9, 0, 0, 12, 1, 2, 3, 4, 0, 6, 1, 2, 3, 4, 27, 6, 0, 8, 9, 16, 1, 2, 3, 4, 0, 6, 0, 8, 1, 2, 3, 4, 0, 6, 0, 8, 9, 1, 2, 3, 4, 32, 6, 16, 8, 9, 27, 0, 12, 0, 0, 24, 1, 2, 3, 4, 0 (list; graph; listen)
OFFSET

1,6

COMMENT

a(n)=0 iff A081326(n)=0; if a(n)>0: a(n)+A081328(n)=n.

EXAMPLE

a(32) = 8 = 2^3, as 32 = 8 + 3*2^3.

CROSSREFS

Cf. A081329, A081330, A081328, A000040, A003586.

Sequence in context: A029380 A108129 A078349 this_sequence A030422 A090001 A117166

Adjacent sequences: A081324 A081325 A081326 this_sequence A081328 A081329 A081330

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 19 2003

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 9 14:43 EST 2009. Contains 170430 sequences.


AT&T Labs Research