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!)

A000418 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 1
9 7
10 34
11 136
12 487
13 1615
14 5079
15 15349
16 45009
17 128899
18 362266
19 1002681
20 2740448
21 7411408
22 19865445
23 52840977
24 139624510
25 366803313
26 958696860
27 2494322662
28 6463281890
29 16686206047
30 42935345688
31 110142163940
32 281763465941

[0,0,0,0,0,0,0,1,7,34,136,487,1615,5079,15349,
 45009,128899,362266,1002681,2740448,7411408,
 19865445,52840977,139624510,366803313,958696860,
 2494322662,6463281890,16686206047,42935345688,
 110142163940,281763465941]

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 17 21:01 EDT 2024. Contains 371767 sequences. (Running on oeis4.)