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

 

Logo

Please make a donation to keep the OEIS running. We are now in our 56th year. In the past year we added 10000 new sequences and reached almost 9000 citations (which often say "discovered thanks to the OEIS").
Other ways to donate

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

A054858 as a simple table

n a(n)
1 1
2 7
3 13
4 20
5 35
6 66
7 118
8 218
9 402
10 738
11 1358
12 2498
13 4594
14 8450
15 15542
16 28586
17 52578
18 96706
19 177870
20 327154
21 601730
22 1106754
23 2035638
24 3744122
25 6886514
26 12666274
27 23296910
28 42849698
29 78812882
30 144959490
31 266622070

[1,7,13,20,35,66,118,218,402,738,1358,2498,4594,
 8450,15542,28586,52578,96706,177870,327154,601730,
 1106754,2035638,3744122,6886514,12666274,23296910,
 42849698,78812882,144959490,266622070]

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 November 26 01:22 EST 2020. Contains 338631 sequences. (Running on oeis4.)