login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


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

A054139 as a simple table

n a(n)
0 1
1 4
2 18
3 97
4 570
5 3489
6 21810
7 138044
8 881098
9 5658793
10 36520068
11 236619717
12 1538134272
13 10026366588
14 65513185896
15 428957025672

[1,4,18,97,570,3489,21810,138044,881098,5658793,
 36520068,236619717,1538134272,10026366588,
 65513185896,428957025672]

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 7 14:43 EDT 2020. Contains 336276 sequences. (Running on oeis4.)