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!)

A301952 as a simple table

n a(n)
1 0
2 5
3 20
4 123
5 680
6 4070
7 23565
8 138014
9 805249
10 4704141
11 27469522
12 160428571
13 936897912
14 5471539885
15 31953953498
16 186612354231
17 1089822896327
18 6364606387628
19 37169536347339
20 217071469820879
21 1267705419106309

[0,5,20,123,680,4070,23565,138014,805249,4704141,
 27469522,160428571,936897912,5471539885,
 31953953498,186612354231,1089822896327,
 6364606387628,37169536347339,217071469820879,
 1267705419106309]

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 November 30 05:12 EST 2021. Contains 349419 sequences. (Running on oeis4.)