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!)

A219969 as a simple table

n a(n)
0 1
1 0
2 2
3 4
4 8
5 28
6 65
7 170
8 456
9 1177
10 3068
11 8016
12 21028
13 54696
14 142908
15 374527
16 976022
17 2551162
18 6674999
19 17422250
20 45536000
21 119053392
22 310969076
23 812695944
24 2124175469
25 5550025712
26 14503987368
27 37905500955
28 99050326532
29 258846292750
30 676453686574

[1,0,2,4,8,28,65,170,456,1177,3068,8016,21028,
 54696,142908,374527,976022,2551162,6674999,
 17422250,45536000,119053392,310969076,812695944,
 2124175469,5550025712,14503987368,37905500955,
 99050326532,258846292750,676453686574]

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 September 28 17:45 EDT 2022. Contains 357080 sequences. (Running on oeis4.)