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!)

A120808 as a simple table

n a(n)
1 1
2 5
3 71
4 303839
5 1030349
6 1356899
7 1437719
8 2248529
9 2416259
10 2576549
11 2797961
12 4007321
13 4353521
14 4875491
15 6137501
16 6611441
17 6698831
18 6904421
19 7821791
20 8078981
21 9221231
22 9311279
23 9500279
24 10157309
25 11251421
26 11879939
27 11957969

[1,5,71,303839,1030349,1356899,1437719,2248529,
 2416259,2576549,2797961,4007321,4353521,4875491,
 6137501,6611441,6698831,6904421,7821791,8078981,
 9221231,9311279,9500279,10157309,11251421,
 11879939,11957969]

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.)