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!)

A020698 as a simple table

n a(n)
0 2
1 9
2 41
3 187
4 853
5 3891
6 17749
7 80963
8 369317
9 1684659
10 7684661
11 35053987
12 159900613
13 729395091
14 3327174229
15 15177080963
16 69231056357
17 315801119859
18 1440543486581
19 6571115193187
20 29974488992773
21 136730214577491
22 623702094901909
23 2845050045354563

[2,9,41,187,853,3891,17749,80963,369317,1684659,
 7684661,35053987,159900613,729395091,3327174229,
 15177080963,69231056357,315801119859,
 1440543486581,6571115193187,29974488992773,
 136730214577491,623702094901909,2845050045354563]

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 August 3 20:08 EDT 2020. Contains 336201 sequences. (Running on oeis4.)