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.

A217730 Expansion of (1+2*x-x^3)/(1-4*x^2+2*x^4).

Table of values

n a(n)
0 1
1 2
2 4
3 7
4 14
5 24
6 48
7 82
8 164
9 280
10 560
11 956
12 1912
13 3264
14 6528
15 11144
16 22288
17 38048
18 76096
19 129904
20 259808
21 443520
22 887040
23 1514272
24 3028544
25 5170048
26 10340096
27 17651648
28 35303296
29 60266496
30 120532992
31 205762688
32 411525376
33 702517760
34 1405035520
35 2398545664
36 4797091328
37 8189147136
38 16378294272
39 27959497216

List of values

[1, 2, 4, 7, 14, 24, 48, 82, 164, 280, 560, 956, 1912, 3264, 6528, 11144, 22288, 38048, 76096, 129904, 259808, 443520, 887040, 1514272, 3028544, 5170048, 10340096, 17651648, 35303296, 60266496, 120532992, 205762688, 411525376, 702517760, 1405035520, 2398545664, 4797091328, 8189147136, 16378294272, 27959497216]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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