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!)

A218680 as a simple table

n a(n)
0 1
1 1
2 3
3 16
4 111
5 911
6 8622
7 91414
8 1067579
9 13564195
10 185687381
11 2718184470
12 42288343176
13 695667651368
14 12049465530936
15 218945489692574
16 4160440403683643
17 82448824370010887
18 1699889286488298603
19 36384381642357676480
20 806926050321577391347
21 18510872795071148287531

[1,1,3,16,111,911,8622,91414,1067579,13564195,
 185687381,2718184470,42288343176,695667651368,
 12049465530936,218945489692574,4160440403683643,
 82448824370010887,1699889286488298603,
 36384381642357676480,806926050321577391347,
 18510872795071148287531]

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 5 08:27 EDT 2021. Contains 346464 sequences. (Running on oeis4.)