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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.

A367659 G.f. A(x) satisfies A(x) = 1 / (1 - x - x * A(x^3)).

Table of values

n a(n)
0 1
1 2
2 4
3 8
4 18
5 40
6 88
7 196
8 436
9 968
10 2152
11 4784
12 10632
13 23634
14 52536
15 116776
16 259576
17 577000
18 1282576
19 2850968
20 6337264
21 14086744
22 31312644
23 69603152
24 154716976
25 343911796
26 764462500
27 1699281320
28 3777238312
29 8396213840
30 18663478600
31 41486012712
32 92216959616

List of values

[1, 2, 4, 8, 18, 40, 88, 196, 436, 968, 2152, 4784, 10632, 23634, 52536, 116776, 259576, 577000, 1282576, 2850968, 6337264, 14086744, 31312644, 69603152, 154716976, 343911796, 764462500, 1699281320, 3777238312, 8396213840, 18663478600, 41486012712, 92216959616]

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

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