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!)

A136783 as a simple table

n a(n)
1 1
2 4
3 20
4 112
5 660
6 3976
7 24180
8 147648
9 903140
10 5528504
11 33853220
12 207325392
13 1269787060
14 7777149416
15 47633751380
16 291750220768
17 1786933908740
18 10944758154264
19 67035370422020
20 410583912229872
21 2514779283989460
22 15402734618128456
23 94339983758166580

[1,4,20,112,660,3976,24180,147648,903140,5528504,
 33853220,207325392,1269787060,7777149416,
 47633751380,291750220768,1786933908740,
 10944758154264,67035370422020,410583912229872,
 2514779283989460,15402734618128456,
 94339983758166580]

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 25 13:27 EDT 2024. Contains 371971 sequences. (Running on oeis4.)