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!)

A260217 as a simple table

n a(n)
1 0
2 0
3 4
4 24
5 100
6 360
7 1204
8 3864
9 12100
10 37320
11 114004
12 346104
13 1046500
14 3155880
15 9500404
16 28566744
17 85831300
18 257756040
19 773792404
20 2322425784
21 6969374500
22 20912317800
23 62745342004
24 188252803224
25 564791964100
26 1694443001160
27 5083463221204
28 15250658099064

[0,0,4,24,100,360,1204,3864,12100,37320,114004,
 346104,1046500,3155880,9500404,28566744,85831300,
 257756040,773792404,2322425784,6969374500,
 20912317800,62745342004,188252803224,564791964100,
 1694443001160,5083463221204,15250658099064]

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 18 20:26 EDT 2024. Contains 371781 sequences. (Running on oeis4.)