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.

A351049 G.f. A(x) satisfies: A(x) = 1 + x + x^2 * A(x/(1 - 3*x)) / (1 - 3*x).

Table of values

n a(n)
0 1
1 1
2 1
3 4
4 16
5 67
6 307
7 1585
8 9235
9 59548
10 415564
11 3094807
12 24452785
13 204611653
14 1810429597
15 16892405896
16 165592138372
17 1698918207403
18 18184602679435
19 202577753111653
20 2344503929765023
21 28146188358379120
22 349996346545057288
23 4501360727764475503

List of values

[1, 1, 1, 4, 16, 67, 307, 1585, 9235, 59548, 415564, 3094807, 24452785, 204611653, 1810429597, 16892405896, 165592138372, 1698918207403, 18184602679435, 202577753111653, 2344503929765023, 28146188358379120, 349996346545057288, 4501360727764475503]