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!)

A228677 as a simple table

n a(n)
10 1
11 0
12 0
13 0
14 0
15 0
16 0
17 0
18 0
19 0
20 184755
21 705430
22 1293290
23 2288130
24 3922510
25 6537518
26 10623468
27 16872568
28 26246218
29 40060018
30 5550996791339
31 46930896641461
32 261675515571604
33 1068582396297367
34 3799177830315370
35 12437930832322213
36 38494027637595340

[1,0,0,0,0,0,0,0,0,0,184755,705430,1293290,
 2288130,3922510,6537518,10623468,16872568,
 26246218,40060018,5550996791339,46930896641461,
 261675515571604,1068582396297367,3799177830315370,
 12437930832322213,38494027637595340]

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 5 12:24 EST 2021. Contains 349557 sequences. (Running on oeis4.)