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!)

A227457 as a simple table

n a(n)
1 1
2 2
3 9
4 68
5 720
6 9804
7 163184
8 3210192
9 72870120
10 1874721360
11 53905894152
12 1713195438624
13 59633476003920
14 2256257009704320
15 92196226214092800
16 4046446853549201664
17 189845257963376620800
18 9481546020840245199360
19 502242773970728703225600
20 28124368575613839072714240

[1,2,9,68,720,9804,163184,3210192,72870120,
 1874721360,53905894152,1713195438624,
 59633476003920,2256257009704320,92196226214092800,
 4046446853549201664,189845257963376620800,
 9481546020840245199360,502242773970728703225600,
 28124368575613839072714240]

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 March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)