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!)

A207402 as a simple table

n a(n)
1 20
2 400
3 2340
4 8910
5 26676
6 68060
7 154580
8 321110
9 621300
10 1134296
11 1972900
12 3293310
13 5306580
14 8291940
15 12612116
16 18730790
17 27232340
18 38844000
19 54460580
20 75171886
21 102292980
22 137397420
23 182353620
24 239364470
25 311010356
26 400295720

[20,400,2340,8910,26676,68060,154580,321110,
 621300,1134296,1972900,3293310,5306580,8291940,
 12612116,18730790,27232340,38844000,54460580,
 75171886,102292980,137397420,182353620,239364470,
 311010356,400295720]

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 23 20:33 EDT 2024. Contains 371916 sequences. (Running on oeis4.)