login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A224528 Number of idempotent 6X6 0..n matrices of rank 1 0
1458, 10830, 36042, 99774, 208146, 430278, 745650, 1289622, 2048514 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A224524

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=2

..0..0..1..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0....0..0..1..0..0..0

..0..0..0..0..0..0....0..0..0..0..2..2....0..0..0..0..0..0....0..0..2..0..0..0

..0..0..1..0..0..0....0..0..0..0..1..1....1..0..0..0..1..2....0..0..1..0..0..0

..0..0..2..0..0..0....0..0..0..0..2..2....0..0..0..0..0..0....0..0..0..0..0..0

..0..0..1..0..0..0....0..0..0..0..0..0....1..0..0..0..1..2....0..0..2..0..0..0

..0..0..1..0..0..0....0..0..0..0..1..1....0..0..0..0..0..0....0..0..1..0..0..0

CROSSREFS

Sequence in context: A235554 A255345 A091715 * A206147 A035764 A107560

Adjacent sequences:  A224525 A224526 A224527 * A224529 A224530 A224531

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 09 2013

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 7 06:09 EST 2021. Contains 349567 sequences. (Running on oeis4.)