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!)

A100687 as a simple table

n a(n)
1 1
2 2
3 2
4 2
5 2
6 18
7 48
8 46
9 80
10 130
11 74
12 120
13 118
14 136
15 174
16 132
17 168
18 198
19 190
20 130
21 176
22 234
23 358
24 102
25 354
26 364
27 336
28 324
29 486
30 442

[1,2,2,2,2,18,48,46,80,130,74,120,118,136,174,132,
 168,198,190,130,176,234,358,102,354,364,336,324,
 486,442]

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 17:55 EST 2021. Contains 349445 sequences. (Running on oeis4.)