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.

A199876 G.f. satisfies: A(x) = (1 + x*A(x)^3)*(1 + x^2*A(x)^3).

Table of values

n a(n)
0 1
1 1
2 4
3 19
4 103
5 604
6 3728
7 23866
8 157015
9 1055121
10 7211227
11 49970893
12 350283538
13 2479386646
14 17696379769
15 127220129807
16 920376055978
17 6695598216385
18 48950677790253
19 359456740745360
20 2650089982411601
21 19608110285151138
22 145555836451997536
23 1083723594296492362

List of values

[1, 1, 4, 19, 103, 604, 3728, 23866, 157015, 1055121, 7211227, 49970893, 350283538, 2479386646, 17696379769, 127220129807, 920376055978, 6695598216385, 48950677790253, 359456740745360, 2650089982411601, 19608110285151138, 145555836451997536, 1083723594296492362]