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.

A180510 G.f.: (t^5 + 2*t^4 + t^3 + 2*t^2 + t) / (t^6 + t^5 - 2*t^4 - 5*t^3 - 2*t^2 + t + 1).

Table of values

n a(n)
0 0
1 1
2 1
3 2
4 7
5 5
6 20
7 27
8 49
9 106
10 155
11 331
12 560
13 1013
14 1917
15 3310
16 6223
17 11117
18 20140
19 36899
20 66185
21 121014
22 218791
23 396703
24 721280
25 1305025
26 2371433
27 4298618
28 7796439
29 14150029
30 25652500
31 46550531
32 84427441
33 153141122
34 277824947
35 503893035
36 914114320
37 1658100757
38 3007674389
39 5455918726
40 9896444495
41 17951959061
42 32563657260

List of values

[0, 1, 1, 2, 7, 5, 20, 27, 49, 106, 155, 331, 560, 1013, 1917, 3310, 6223, 11117, 20140, 36899, 66185, 121014, 218791, 396703, 721280, 1305025, 2371433, 4298618, 7796439, 14150029, 25652500, 46550531, 84427441, 153141122, 277824947, 503893035, 914114320, 1658100757, 3007674389, 5455918726, 9896444495, 17951959061, 32563657260]