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

 

Logo


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

A055880 as a simple table

n a(n)
1 1
2 13
3 69
4 347
5 1736
6 3993
7 41059
8 215842
9 498546
10 2202398
11 10866824
12 54261537
13 637482331
14 3370498978
15 7788765114
16 34411960682
17 169793870966
18 847836388608
19 4238615459929
20 49803023550277
21 263320090876701
22 1323752940946163

[1,13,69,347,1736,3993,41059,215842,498546,
 2202398,10866824,54261537,637482331,3370498978,
 7788765114,34411960682,169793870966,847836388608,
 4238615459929,49803023550277,263320090876701,
 1323752940946163]

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 September 28 12:34 EDT 2020. Contains 337393 sequences. (Running on oeis4.)