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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A162076 Number of n X n symmetric binary arrays with rows, considered as graycode numbers, in nondecreasing order, and an odd number of ones in each row 0
1, 1, 4, 8, 40, 226, 2579, 49498, 1765630, 113965238, 13490574157, 2926835209126, 1169086294542192, 862917161990013829, 1181920894330563626871 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..15.

CROSSREFS

Sequence in context: A009335 A303566 A165622 * A137047 A137052 A111411

Adjacent sequences:  A162073 A162074 A162075 * A162077 A162078 A162079

KEYWORD

nonn

AUTHOR

R. H. Hardin Jun 25 2009

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 October 25 11:00 EDT 2021. Contains 348239 sequences. (Running on oeis4.)