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!)

A279462 as a simple table

n a(n)
1 2
2 20
3 180
4 1722
5 15484
6 129914
7 1079792
8 8845592
9 71540206
10 572555634
11 4544198480
12 35814522446
13 280584310722
14 2186897305592
15 16968580781888
16 131145107324352
17 1010053181919720
18 7755079215544062
19 59376833021426668

[2,20,180,1722,15484,129914,1079792,8845592,
 71540206,572555634,4544198480,35814522446,
 280584310722,2186897305592,16968580781888,
 131145107324352,1010053181919720,7755079215544062,
 59376833021426668]

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 5 10:45 EST 2019. Contains 329751 sequences. (Running on oeis4.)