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!)

A172528 as a simple table

n a(n)
0 1
1 1
2 1
3 1
4 2
5 3
6 3
7 1
8 3
9 8
10 19
11 38
12 60
13 60
14 1
15 4
16 15
17 53
18 175
19 535
20 1490
21 3675
22 7700
23 12600
24 12600
25 1
26 5
27 24
28 111
29 494
30 2111
31 8634
32 33635
33 123998
34 428820
35 1373820
36 4003230
37 10325700
38 22522500
39 37837800
40 37837800

[1,1,1,1,2,3,3,1,3,8,19,38,60,60,1,4,15,53,175,
 535,1490,3675,7700,12600,12600,1,5,24,111,494,
 2111,8634,33635,123998,428820,1373820,4003230,
 10325700,22522500,37837800,37837800]

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 January 23 20:47 EST 2022. Contains 350515 sequences. (Running on oeis4.)