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!)

A269673 as a simple table

n a(n)
1 4
2 16
3 60
4 224
5 820
6 2976
7 10700
8 38224
9 135780
10 480176
11 1691740
12 5941824
13 20814740
14 72755776
15 253836780
16 884207024
17 3075861700
18 10687549776
19 37098781820
20 128668433824
21 445930140660
22 1544500542176
23 5346546062860
24 18499277662224

[4,16,60,224,820,2976,10700,38224,135780,480176,
 1691740,5941824,20814740,72755776,253836780,
 884207024,3075861700,10687549776,37098781820,
 128668433824,445930140660,1544500542176,
 5346546062860,18499277662224]

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 November 27 07:28 EST 2021. Contains 349365 sequences. (Running on oeis4.)