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!)

A109454 as a simple table

n a(n)
0 0
1 0
2 0
3 0
4 4
5 13
6 42
7 119
8 330
9 890
10 2376
11 6291
12 16588
13 43615
14 114492
15 300236
16 786828
17 2061233
18 5398470
19 14136759
20 37015990
21 96917974
22 253748880
23 664346375
24 1739318904
25 4553656703
26 11921726232
27 31211643384
28 81713400340
29 213928875445
30 560073740226

[0,0,0,0,4,13,42,119,330,890,2376,6291,16588,
 43615,114492,300236,786828,2061233,5398470,
 14136759,37015990,96917974,253748880,664346375,
 1739318904,4553656703,11921726232,31211643384,
 81713400340,213928875445,560073740226]

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 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)