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!)

A180070 as a simple table

n a(n)
0 1
1 1
2 2
3 6
4 12
5 44
6 116
7 374
8 1428
9 5960
10 26016
11 120570
12 590598
13 3065372
14 16566508
15 92827128
16 542485764
17 3298228302
18 20696614200

[1,1,2,6,12,44,116,374,1428,5960,26016,120570,
 590598,3065372,16566508,92827128,542485764,
 3298228302,20696614200]

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 March 6 04:14 EST 2021. Contains 341841 sequences. (Running on oeis4.)