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!)

A000140 as a simple table

n a(n)
1 1
2 1
3 2
4 6
5 22
6 101
7 573
8 3836
9 29228
10 250749
11 2409581
12 25598186
13 296643390
14 3727542188
15 50626553988
16 738680521142
17 11501573822788
18 190418421447330
19 3344822488498265
20 62119523114983224
21 1214967840930909302
22 24965661442811799655
23 538134522243713149122

[1,1,2,6,22,101,573,3836,29228,250749,2409581,
 25598186,296643390,3727542188,50626553988,
 738680521142,11501573822788,190418421447330,
 3344822488498265,62119523114983224,
 1214967840930909302,24965661442811799655,
 538134522243713149122]

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 April 18 16:22 EDT 2024. Contains 371780 sequences. (Running on oeis4.)