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!)

A320931 as a simple table

n a(n)
0 1
1 2
2 4
3 12
4 24
5 80
6 292
7 966
8 3876
9 15554
10 61608
11 254612
12 1065676
13 4471672
14 19074968
15 82043172
16 354365492
17 1543432514
18 6760146292
19 29732837780
20 131440491584
21 583419967664
22 2598585783488
23 11615321544700
24 52079369904384
25 234157152231726
26 1055628140278948
27 4770576024205060

[1,2,4,12,24,80,292,966,3876,15554,61608,254612,
 1065676,4471672,19074968,82043172,354365492,
 1543432514,6760146292,29732837780,131440491584,
 583419967664,2598585783488,11615321544700,
 52079369904384,234157152231726,1055628140278948,
 4770576024205060]

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 24 05:26 EDT 2024. Contains 371918 sequences. (Running on oeis4.)