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.

A351344 G.f. A(x) satisfies: A(x) = 1 + x + x^2 + x^3 + x^4 + x^5 * A(x/(1 - 2*x)) / (1 - 2*x).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 1
6 3
7 9
8 27
9 81
10 243
11 731
12 2223
13 6939
14 22727
15 79971
16 306929
17 1282815
18 5744361
19 26984415
20 130656409
21 644739377
22 3224303841
23 16318576681
24 83717193681
25 436948772697
26 2331807007139
27 12791837178265
28 72472130039123
29 425239734375217
30 2584950704996379

List of values

[1, 1, 1, 1, 1, 1, 3, 9, 27, 81, 243, 731, 2223, 6939, 22727, 79971, 306929, 1282815, 5744361, 26984415, 130656409, 644739377, 3224303841, 16318576681, 83717193681, 436948772697, 2331807007139, 12791837178265, 72472130039123, 425239734375217, 2584950704996379]