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!)

A207821 as a simple table

n a(n)
0 0
1 1
2 0
3 5
4 12
5 69
6 370
7 2609
8 20552
9 183249
10 1817794
11 19867793
12 237126320
13 3068483277
14 42788761294
15 639619513669
16 10202914060472
17 172984071549421
18 3106257794721534
19 58892020126278457
20 1175554242034515780

[0,1,0,5,12,69,370,2609,20552,183249,1817794,
 19867793,237126320,3068483277,42788761294,
 639619513669,10202914060472,172984071549421,
 3106257794721534,58892020126278457,
 1175554242034515780]

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 25 01:19 EDT 2024. Contains 375418 sequences. (Running on oeis4.)