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!)

A181784 as a simple table

n a(n)
0 1
1 1
2 4
3 22
4 140
5 969
6 7084
7 53820
8 420732
9 3782992
10 32389076
11 275617830
12 2350749914
13 20140518790
14 173429992350
15 1500850805160
16 14550277251918
17 133009333771170
18 1198324107797254

[1,1,4,22,140,969,7084,53820,420732,3782992,
 32389076,275617830,2350749914,20140518790,
 173429992350,1500850805160,14550277251918,
 133009333771170,1198324107797254]

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 April 23 12:27 EDT 2024. Contains 371912 sequences. (Running on oeis4.)