login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

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

A180781 as a simple table

n a(n)
1 0
2 1
3 18
4 756
5 18478
6 327338
7 4292145
8 43576141
9 354466005
10 2394458182
11 13770292261
12 69111228938
13 307750080438
14 1236998118274
15 4537247867399
16 15375840213938
17 48489022864504
18 143625325278096
19 401488209736317

[0,1,18,756,18478,327338,4292145,43576141,
 354466005,2394458182,13770292261,69111228938,
 307750080438,1236998118274,4537247867399,
 15375840213938,48489022864504,143625325278096,
 401488209736317]

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 15 23:32 EDT 2022. Contains 356150 sequences. (Running on oeis4.)