Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A140190
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
%I A140190
%S A140190 1,1,3,5,9,15,27,44,71,113,176,271,413,621,927,1375,2004,2924,4213
%N A140190 a(n) is the number of groupoids (categories all of whose morphisms are 
               invertible) with m morphisms and m-n objects for any m>=2n.
%C A140190 Limiting values of A140188, i.e., a(n) = T140188(m,m-n) for any m>=2n.
%Y A140190 Sequence in context: A018342 A029485 A147087 this_sequence A083658 A018436 
               A018298
%Y A140190 Adjacent sequences: A140187 A140188 A140189 this_sequence A140191 A140192 
               A140193
%K A140190 nonn
%O A140190 0,3
%A A140190 Benoit Jubin (benoit_jubin(AT)yahoo.fr), May 12 2008

    
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 1 19:22 EST 2009. Contains 167811 sequences.


AT&T Labs Research