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

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

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

A124638 as a simple table

n a(n)
0 1
1 0
2 3
3 4
4 12
5 20
6 45
7 80
8 168
9 296
10 573
11 1012
12 1874
13 3268
14 5824
15 10020
16 17338
17 29308
18 49511
19 82168

[1,0,3,4,12,20,45,80,168,296,573,1012,1874,3268,
 5824,10020,17338,29308,49511,82168]

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 December 4 13:29 EST 2021. Contains 349526 sequences. (Running on oeis4.)