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!)

A117615 as a simple table

n a(n)
0 0
1 1
2 4
3 18
4 72
5 290
6 1160
7 4642
8 18568
9 74274
10 297096
11 1188386
12 4753544
13 19014178
14 76056712
15 304226850
16 1216907400
17 4867629602
18 19470518408
19 77882073634
20 311528294536
21 1246113178146
22 4984452712584
23 19937810850338
24 79751243401352

[0,1,4,18,72,290,1160,4642,18568,74274,297096,
 1188386,4753544,19014178,76056712,304226850,
 1216907400,4867629602,19470518408,77882073634,
 311528294536,1246113178146,4984452712584,
 19937810850338,79751243401352]

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 September 26 21:46 EDT 2020. Contains 337377 sequences. (Running on oeis4.)