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!)

A217949 as a simple table

n a(n)
1 4
2 16
3 50
4 130
5 310
6 736
7 1821
8 4673
9 12107
10 31103
11 79039
12 199819
13 505477
14 1282309
15 3259549
16 8288613
17 21064316
18 53497376
19 135833020
20 344914900
21 875983319
22 2224986219
23 5651490601
24 14354263713
25 36457137516
26 92593166734
27 235168023403

[4,16,50,130,310,736,1821,4673,12107,31103,79039,
 199819,505477,1282309,3259549,8288613,21064316,
 53497376,135833020,344914900,875983319,2224986219,
 5651490601,14354263713,36457137516,92593166734,
 235168023403]

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 May 13 23:41 EDT 2021. Contains 343868 sequences. (Running on oeis4.)