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

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)

A085480 as a simple table

n a(n)
1 3
2 15
3 54
4 207
5 783
6 2970
7 11259
8 42687
9 161838
10 613575
11 2326239
12 8819442
13 33437043
14 126769455
15 480619494
16 1822166847
17 6908359023
18 26191577610
19 99299809899
20 376474162527
21 1427321917278
22 5411388239415
23 20516130470079

[3,15,54,207,783,2970,11259,42687,161838,613575,
 2326239,8819442,33437043,126769455,480619494,
 1822166847,6908359023,26191577610,99299809899,
 376474162527,1427321917278,5411388239415,
 20516130470079]

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 January 23 04:16 EST 2020. Contains 331168 sequences. (Running on oeis4.)