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!)

A008643 as a simple table

n a(n)
0 1
1 1
2 2
3 2
4 4
5 4
6 6
7 6
8 10
9 10
10 14
11 14
12 20
13 20
14 26
15 26
16 35
17 35
18 44
19 44
20 56
21 56
22 68
23 68
24 84
25 84
26 100
27 100
28 120
29 120
30 140
31 140
32 165
33 165
34 190
35 190
36 220
37 220
38 250
39 250
40 286
41 286
42 322
43 322
44 364
45 364
46 406
47 406
48 455
49 455
50 504
51 504
52 560
53 560
54 616
55 616
56 680
57 680
58 744

[1,1,2,2,4,4,6,6,10,10,14,14,20,20,26,26,35,35,44,
 44,56,56,68,68,84,84,100,100,120,120,140,140,165,
 165,190,190,220,220,250,250,286,286,322,322,364,
 364,406,406,455,455,504,504,560,560,616,616,680,
 680,744]

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 June 25 06:59 EDT 2021. Contains 345452 sequences. (Running on oeis4.)