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.

A238738 Expansion of (1 + 2*x + 2*x^2)/(1 - x - 2*x^3 + 2*x^4 + x^6 - x^7).

Table of values

n a(n)
0 1
1 3
2 5
3 7
4 11
5 15
6 18
7 24
8 30
9 34
10 42
11 50
12 55
13 65
14 75
15 81
16 93
17 105
18 112
19 126
20 140
21 148
22 164
23 180
24 189
25 207
26 225
27 235
28 255
29 275
30 286
31 308
32 330
33 342
34 366
35 390
36 403
37 429
38 455
39 469
40 497
41 525
42 540
43 570
44 600
45 616
46 648
47 680
48 697
49 731
50 765
51 783
52 819
53 855
54 874

List of values

[1, 3, 5, 7, 11, 15, 18, 24, 30, 34, 42, 50, 55, 65, 75, 81, 93, 105, 112, 126, 140, 148, 164, 180, 189, 207, 225, 235, 255, 275, 286, 308, 330, 342, 366, 390, 403, 429, 455, 469, 497, 525, 540, 570, 600, 616, 648, 680, 697, 731, 765, 783, 819, 855, 874]

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

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