login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

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

A128327 as a simple table

n a(n)
0 1
1 1
2 4
3 20
4 114
5 712
6 4772
7 33896
8 253102
9 1975610
10 16054568
11 135413280
12 1182664740
13 10675334958
14 99437919664
15 954581258020
16 9433732288486
17 95883201181772
18 1001411775057322
19 10738668800872594
20 118151145186400408

[1,1,4,20,114,712,4772,33896,253102,1975610,
 16054568,135413280,1182664740,10675334958,
 99437919664,954581258020,9433732288486,
 95883201181772,1001411775057322,10738668800872594,
 118151145186400408]

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 26 22:13 EST 2023. Contains 359836 sequences. (Running on oeis4.)