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!)

A133709 as a simple table

n a(n)
1 1
2 1
3 3
4 3
5 1
6 7
7 35
8 140
9 420
10 840
11 840
12 1
13 12
14 131
15 1435
16 15225
17 150570
18 1351770
19 10810800
20 75675600
21 454053600
22 2270268000
23 9081072000
24 27243216000
25 54486432000
26 54486432000
27 1
28 18
29 347
30 7693
31 185031
32 4568046
33 111793710
34 2661422400

[1,1,3,3,1,7,35,140,420,840,840,1,12,131,1435,
 15225,150570,1351770,10810800,75675600,454053600,
 2270268000,9081072000,27243216000,54486432000,
 54486432000,1,18,347,7693,185031,4568046,
 111793710,2661422400]

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 19 16:38 EDT 2024. Contains 371794 sequences. (Running on oeis4.)