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

 

Logo

Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing.
Other ways to donate

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

A158826 as a simple table

n a(n)
1 1
2 3
3 12
4 54
5 260
6 1310
7 6824
8 36478
9 199094
10 1105478
11 6227712
12 35520498
13 204773400
14 1191572004
15 6990859416
16 41313818217
17 245735825082
18 1470125583756
19 8840948601024
20 53417237877396
21 324123222435804
22 1974317194619712

[1,3,12,54,260,1310,6824,36478,199094,1105478,
 6227712,35520498,204773400,1191572004,6990859416,
 41313818217,245735825082,1470125583756,
 8840948601024,53417237877396,324123222435804,
 1974317194619712]

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 December 7 22:29 EST 2019. Contains 329850 sequences. (Running on oeis4.)