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!)

A240188 as a simple table

n a(n)
1 1
2 8
3 37
4 138
5 680
6 2413
7 10017
8 43956
9 159668
10 681760
11 2806434
12 10675575
13 45462460
14 181764269
15 715963401
16 3000804172
17 11895218236
18 47847647772
19 197325296591
20 783759057127
21 3182984036915
22 12972975259195
23 51820141213238

[1,8,37,138,680,2413,10017,43956,159668,681760,
 2806434,10675575,45462460,181764269,715963401,
 3000804172,11895218236,47847647772,197325296591,
 783759057127,3182984036915,12972975259195,
 51820141213238]

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 2 13:42 EST 2021. Contains 349444 sequences. (Running on oeis4.)