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!)

A290721 as a simple table

n a(n)
1 2
2 13
3 60
4 251
5 1018
6 4089
7 16376
8 65527
9 262134
10 1048565
11 4194292
12 16777203
13 67108850
14 268435441
15 1073741808
16 4294967279
17 17179869166
18 68719476717
19 274877906924
20 1099511627755
21 4398046511082
22 17592186044393
23 70368744177640
24 281474976710631
25 1125899906842598

[2,13,60,251,1018,4089,16376,65527,262134,1048565,
 4194292,16777203,67108850,268435441,1073741808,
 4294967279,17179869166,68719476717,274877906924,
 1099511627755,4398046511082,17592186044393,
 70368744177640,281474976710631,1125899906842598]

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 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)