The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

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

A291032 as a simple table

n a(n)
0 1
1 4
2 15
3 54
4 188
5 645
6 2208
7 7570
8 25982
9 89190
10 306095
11 1050268
12 3603276
13 12361763
14 42409154
15 145491117
16 499126660
17 1712311759
18 5874263702
19 20152234481
20 69134134820
21 237171010852
22 813636681973
23 2791253840066
24 9575645985794
25 32850107071454
26 112695214040224

[1,4,15,54,188,645,2208,7570,25982,89190,306095,
 1050268,3603276,12361763,42409154,145491117,
 499126660,1712311759,5874263702,20152234481,
 69134134820,237171010852,813636681973,
 2791253840066,9575645985794,32850107071454,
 112695214040224]

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 3 23:31 EDT 2024. Contains 373088 sequences. (Running on oeis4.)