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!)
A162129 Number of n X n symmetric 0..4 arrays with rows, considered as 5-ary numbers, in strictly increasing order 1
5, 60, 2760, 484080, 338068896, 978499965120, 12089923625362560, 651463262292403173120, 155573689115651381334403584, 166729737526490189184729707572224 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

R. H. Hardin, Table of n, a(n) for n=1..12

CROSSREFS

Sequence in context: A218801 A303066 A293454 * A326726 A141967 A139915

Adjacent sequences:  A162126 A162127 A162128 * A162130 A162131 A162132

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 September 19 17:35 EDT 2021. Contains 347564 sequences. (Running on oeis4.)