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!)

A090145 as a simple table

n a(n)
0 1
1 -1
2 2
3 -7
4 20
5 -31
6 2
7 -127
8 1640
9 -511
10 -49498
11 -2047
12 2706860
13 -8191
14 -199344598
15 -32767
16 19391577680
17 -131071
18 -2404879413298
19 -524287
20 370371189286100
21 -2097151
22 -69348874388943598
23 -8388607
24 15514534163573864120
25 -33554431
26 -4087072509293056783498

[1,-1,2,-7,20,-31,2,-127,1640,-511,-49498,-2047,
 2706860,-8191,-199344598,-32767,19391577680,
 -131071,-2404879413298,-524287,370371189286100,
 -2097151,-69348874388943598,-8388607,
 15514534163573864120,-33554431,
 -4087072509293056783498]

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 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)