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

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

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

A285745 as a simple table

n a(n)
1 1
2 8
3 105
4 550
5 5105
6 30918
7 265920
8 1773432
9 14632372
10 103605826
11 834224969
12 6128787272
13 48666035225
14 365893476096
15 2883831290602
16 22005412864334
17 172812531531152
18 1331535174196624
19 10442072847350585
20 80985489140322402

[1,8,105,550,5105,30918,265920,1773432,14632372,
 103605826,834224969,6128787272,48666035225,
 365893476096,2883831290602,22005412864334,
 172812531531152,1331535174196624,
 10442072847350585,80985489140322402]

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 4 19:40 EST 2021. Contains 349526 sequences. (Running on oeis4.)