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.

A367718 G.f. A(x) satisfies A(x) = 1 / ((1 + x) * (1 - x * (1 + x + x^2 + x^3) * A(x^4))).

Table of values

n a(n)
0 1
1 0
2 2
3 2
4 6
5 9
6 20
7 36
8 72
9 138
10 269
11 520
12 1010
13 1958
14 3798
15 7365
16 14284
17 27704
18 53728
19 104202
20 202089
21 391939
22 760128
23 1474208
24 2859096
25 5544986
26 10754022
27 20856528
28 40449464
29 78448346
30 152143931
31 295070345
32 572264028
33 1109857872
34 2152475724
35 4174545216

List of values

[1, 0, 2, 2, 6, 9, 20, 36, 72, 138, 269, 520, 1010, 1958, 3798, 7365, 14284, 27704, 53728, 104202, 202089, 391939, 760128, 1474208, 2859096, 5544986, 10754022, 20856528, 40449464, 78448346, 152143931, 295070345, 572264028, 1109857872, 2152475724, 4174545216]

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

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