The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A183040 Number of 3 X 3 0..n arrays with positive determinant. 1
 87, 6396, 106449, 862194, 4680741, 19121763, 64776942, 188565579, 490027068, 1160214360, 2549098734, 5247510432, 10247764287, 19091929404, 34162836240, 59000910075, 98778606894, 160758105174, 255224874669, 396052831464 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS R. H. Hardin, Table of n, a(n) for n = 1..39 EXAMPLE Some positive determinant 3 X 3 0..1 matrices ..1..1..1....0..0..1....0..1..0....0..1..1....1..1..1....0..1..0....0..1..0 ..0..1..1....1..1..0....0..1..1....0..0..1....0..1..0....0..1..1....1..1..1 ..1..0..1....0..1..0....1..1..1....1..1..0....0..0..1....1..0..1....1..1..0 CROSSREFS Sequence in context: A017803 A017750 A291130 * A072692 A287590 A133391 Adjacent sequences: A183037 A183038 A183039 * A183041 A183042 A183043 KEYWORD nonn AUTHOR R. H. Hardin, Feb 02 2011 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified June 21 07:48 EDT 2024. Contains 373541 sequences. (Running on oeis4.)