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!)

A109581 as a simple table

n a(n)
0 0
1 1
2 -2
3 6
4 0
5 -120
6 1440
7 -10080
8 40320
9 362880
10 -10886400
11 159667200
12 -1437004800
13 0
14 348713164800
15 -9153720576000
16 146459529216000
17 -1067062284288000
18 -25609494822912000
19 1338096104497152000
20 -34060628114472960000
21 510909421717094400000

[0,1,-2,6,0,-120,1440,-10080,40320,362880,
 -10886400,159667200,-1437004800,0,348713164800,
 -9153720576000,146459529216000,-1067062284288000,
 -25609494822912000,1338096104497152000,
 -34060628114472960000,510909421717094400000]

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 8 21:43 EDT 2022. Contains 356016 sequences. (Running on oeis4.)