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

 

Logo

Please make a donation to keep the OEIS running. We are now in our 56th year. In the past year we added 10000 new sequences and reached almost 9000 citations (which often say "discovered thanks to the OEIS").
Other ways to donate

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

A048065 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 0
6 5
7 15
8 30
9 70
10 105
11 213
12 286
13 558
14 720
15 1500
16 1935
17 4455
18 5775
19 13895
20 17876
21 42484
22 53859
23 124761
24 156065
25 357825
26 444015
27 1028500
28 1272155
29 3002795
30 3709043
31 8871603
32 10935267
33 26243427

[0,0,0,0,0,5,15,30,70,105,213,286,558,720,1500,
 1935,4455,5775,13895,17876,42484,53859,124761,
 156065,357825,444015,1028500,1272155,3002795,
 3709043,8871603,10935267,26243427]

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 November 29 10:05 EST 2020. Contains 338765 sequences. (Running on oeis4.)