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!)

A192423 as a simple table

n a(n)
0 2
1 0
2 4
3 2
4 16
5 20
6 78
7 140
8 416
9 878
10 2324
11 5280
12 13282
13 31200
14 76724
15 182962
16 445376
17 1069300
18 2591118
19 6239980
20 15089776
21 36389278
22 87917284
23 212144640
24 512334722
25 1236606720
26 2985883684
27 7207831202
28 17402424496
29 42011258900

[2,0,4,2,16,20,78,140,416,878,2324,5280,13282,
 31200,76724,182962,445376,1069300,2591118,6239980,
 15089776,36389278,87917284,212144640,512334722,
 1236606720,2985883684,7207831202,17402424496,
 42011258900]

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 September 24 02:57 EDT 2020. Contains 337315 sequences. (Running on oeis4.)