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

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

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

A038112 as a simple table

n a(n)
0 1
1 2
2 9
3 40
4 190
5 924
6 4578
7 22968
8 116325
9 593450
10 3045185
11 15699840
12 81260816
13 421993040
14 2197653240
15 11472991008
16 60023749566
17 314621200260
18 1651883008050
19 8685998428800
20 45734484854520
21 241098942106440
22 1272406536645660

[1,2,9,40,190,924,4578,22968,116325,593450,
 3045185,15699840,81260816,421993040,2197653240,
 11472991008,60023749566,314621200260,
 1651883008050,8685998428800,45734484854520,
 241098942106440,1272406536645660]

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 January 17 23:37 EST 2020. Contains 330995 sequences. (Running on oeis4.)