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.

A384598 Expansion of (1-3*x^2) / (1-x-4*x^2+2*x^3+2*x^4).

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 8
5 18
6 38
7 86
8 186
9 418
10 914
11 2042
12 4490
13 9994
14 22042
15 48954
16 108154
17 239898
18 530522
19 1175898
20 2601882
21 5764634
22 12759322
23 28262298
24 62566554
25 138567834
26 306790810
27 679404442
28 1504298906
29 3331199386
30 7376004506
31 16333395354
32 36166416794

List of values

[1, 1, 2, 4, 8, 18, 38, 86, 186, 418, 914, 2042, 4490, 9994, 22042, 48954, 108154, 239898, 530522, 1175898, 2601882, 5764634, 12759322, 28262298, 62566554, 138567834, 306790810, 679404442, 1504298906, 3331199386, 7376004506, 16333395354, 36166416794]

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

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