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!)

A143931 as a simple table

n a(n)
1 2
2 2
3 3
4 11
5 19
6 31
7 79
8 209
9 607
10 1921
11 6337
12 21907
13 78913
14 295289
15 1143539
16 4574149
17 18859733
18 80014841
19 348776611
20 1559776279
21 7147792823
22 33526120127
23 160785623627
24 787685471389
25 3938427356623
26 20082117944263
27 104349745809077

[2,2,3,11,19,31,79,209,607,1921,6337,21907,78913,
 295289,1143539,4574149,18859733,80014841,
 348776611,1559776279,7147792823,33526120127,
 160785623627,787685471389,3938427356623,
 20082117944263,104349745809077]

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 28 23:12 EST 2022. Contains 350670 sequences. (Running on oeis4.)