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.

A290987 Expansion of (1 - 2*x + x^2 - x^4 + x^3 + x^5)/((1 - x)^2*(1 - 2*x + x^3 - x^4)).

Table of values

n a(n)
0 1
1 2
2 4
3 8
4 16
5 32
6 63
7 122
8 233
9 441
10 830
11 1557
12 2915
13 5451
14 10186
15 19026
16 35529
17 66337
18 123849
19 231211
20 431631
21 805768
22 1504193
23 2807986
24 5241856
25 9785309
26 18266848
27 34099850
28 63656272
29 118831031
30 221829087
31 414101780
32 773028830
33 1443059634
34 2693846606

List of values

[1, 2, 4, 8, 16, 32, 63, 122, 233, 441, 830, 1557, 2915, 5451, 10186, 19026, 35529, 66337, 123849, 231211, 431631, 805768, 1504193, 2807986, 5241856, 9785309, 18266848, 34099850, 63656272, 118831031, 221829087, 414101780, 773028830, 1443059634, 2693846606]