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.

A351028 G.f. A(x) satisfies: A(x) = x + x^2 * A(x/(1 - 2*x)) / (1 - 2*x).

Table of values

n a(n)
0 0
1 1
2 0
3 1
4 4
5 13
6 44
7 173
8 792
9 4009
10 21608
11 122761
12 737340
13 4696341
14 31665076
15 224846037
16 1672266352
17 12976252561
18 104816144656
19 880061135057
20 7670326372532
21 69286959112797
22 647568753568636
23 6251768635591613
24 62255057942504968
25 638658964709824185

List of values

[0, 1, 0, 1, 4, 13, 44, 173, 792, 4009, 21608, 122761, 737340, 4696341, 31665076, 224846037, 1672266352, 12976252561, 104816144656, 880061135057, 7670326372532, 69286959112797, 647568753568636, 6251768635591613, 62255057942504968, 638658964709824185]