cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A288231 Coefficients of 1/(Sum_{k>=0} [(k+1)*r]*(-x)^k), where r = 4^(1/3) and [ ] = floor.

Table of values

n a(n)
0 1
1 3
2 5
3 9
4 18
5 36
6 71
7 138
8 268
9 522
10 1017
11 1981
12 3859
13 7517
14 14642
15 28521
16 55557
17 108223
18 210814
19 410654
20 799931
21 1558224
22 3035341
23 5912689
24 11517614
25 22435718
26 43703622
27 85132404
28 165833537
29 323035186
30 629255898
31 1225758065
32 2387713549
33 4651142959

List of values

[1, 3, 5, 9, 18, 36, 71, 138, 268, 522, 1017, 1981, 3859, 7517, 14642, 28521, 55557, 108223, 210814, 410654, 799931, 1558224, 3035341, 5912689, 11517614, 22435718, 43703622, 85132404, 165833537, 323035186, 629255898, 1225758065, 2387713549, 4651142959]