login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)

A048987 as a simple table

n a(n)
0 1
1 20
2 400
3 8902
4 197281
5 4865609
6 119060324
7 3195901860
8 84998978956
9 2439530234167
10 69352859712417
11 2097651003696806
12 62854969236701747
13 1981066775000396239

[1,20,400,8902,197281,4865609,119060324,
 3195901860,84998978956,2439530234167,
 69352859712417,2097651003696806,62854969236701747,
 1981066775000396239]

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified February 17 16:26 EST 2018. Contains 299296 sequences. (Running on oeis4.)