Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A027832
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A027832 Number of symmetric {-1, +1} matrices of order n with nonnegative row and column sums. +0
1
1, 5, 14, 315, 2634, 301262, 8035168, 4451407563, 392447922178, 1028823851939030, 306635655405986312, 3743721825782942609558, 3832881704712490758507152, 215313862348697780762374273824, 766493362781127793638943080523776, 196222469681558506008588371784165178651, 2452358136558134202145977229121349160510450 (list; graph; listen)
page 1

Search completed in 0.001 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 15 00:47 EST 2009. Contains 170825 sequences.


AT&T Labs Research