The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
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!)

A221977 as a simple table

n a(n)
1 0
2 0
3 1
4 1
5 2
6 3
7 6
8 7
9 8
10 10
11 14
12 18
13 25
14 34
15 46
16 60
17 89
18 120
19 165
20 227
21 298
22 415
23 590
24 821
25 1152
26 1606
27 2240
28 3188
29 4438
30 6208
31 8714
32 12280
33 17368
34 24560
35 34821
36 49413
37 70581
38 100856
39 143955
40 205291
41 293061
42 419256
43 600213
44 858870
45 1230523
46 1764914
47 2532078

[0,0,1,1,2,3,6,7,8,10,14,18,25,34,46,60,89,120,
 165,227,298,415,590,821,1152,1606,2240,3188,4438,
 6208,8714,12280,17368,24560,34821,49413,70581,
 100856,143955,205291,293061,419256,600213,858870,
 1230523,1764914,2532078]

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 May 13 02:41 EDT 2024. Contains 372497 sequences. (Running on oeis4.)