login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


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

A001631 as a simple table

n a(n)
0 0
1 0
2 1
3 0
4 1
5 2
6 4
7 7
8 14
9 27
10 52
11 100
12 193
13 372
14 717
15 1382
16 2664
17 5135
18 9898
19 19079
20 36776
21 70888
22 136641
23 263384
24 507689
25 978602
26 1886316
27 3635991
28 7008598
29 13509507
30 26040412
31 50194508
32 96753025
33 186497452
34 359485397
35 692930382
36 1335666256
37 2574579487

[0,0,1,0,1,2,4,7,14,27,52,100,193,372,717,1382,
 2664,5135,9898,19079,36776,70888,136641,263384,
 507689,978602,1886316,3635991,7008598,13509507,
 26040412,50194508,96753025,186497452,359485397,
 692930382,1335666256,2574579487]

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 February 23 06:50 EST 2020. Contains 332159 sequences. (Running on oeis4.)