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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.

A124280 Expansion of 1/(1-x-x^2+x^3-x^4).

Table of values

n a(n)
0 1
1 1
2 2
3 2
4 4
5 5
6 9
7 12
8 20
9 28
10 45
11 65
12 102
13 150
14 232
15 345
16 529
17 792
18 1208
19 1816
20 2761
21 4161
22 6314
23 9530
24 14444
25 21821
26 33049
27 49956
28 75628
29 114356
30 173077
31 261761
32 396110
33 599150
34 906576
35 1371377
36 2074913
37 3138864
38 4748976
39 7184304
40 10869329
41 16443521

List of values

[1, 1, 2, 2, 4, 5, 9, 12, 20, 28, 45, 65, 102, 150, 232, 345, 529, 792, 1208, 1816, 2761, 4161, 6314, 9530, 14444, 21821, 33049, 49956, 75628, 114356, 173077, 261761, 396110, 599150, 906576, 1371377, 2074913, 3138864, 4748976, 7184304, 10869329, 16443521]

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

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