login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)

A105557 as a simple table

n a(n)
0 1
1 2
2 4
3 10
4 32
5 128
6 626
7 3681
8 25574
9 206402
10 1908996
11 20024149
12 236142157
13 3106393358
14 45265833590
15 726249472784
16 12761749378320
17 244453274012442
18 5082582988294164
19 114258645210526486
20 2767462674168199303

[1,2,4,10,32,128,626,3681,25574,206402,1908996,
 20024149,236142157,3106393358,45265833590,
 726249472784,12761749378320,244453274012442,
 5082582988294164,114258645210526486,
 2767462674168199303]

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 28 19:51 EDT 2020. Contains 338064 sequences. (Running on oeis4.)