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.

A199813 G.f.: exp( Sum_{n>=1} A000984(n)*A000172(n) * x^n/n ), which involves central binomial coefficients (A000984) and Franel numbers (A000172).

Table of values

n a(n)
0 1
1 4
2 38
3 504
4 8249
5 154036
6 3149326
7 68741880
8 1576163328
9 37548785408
10 922252542128
11 23222906277952
12 596981991939677
13 15616173859832740
14 414621835401615110
15 11150969618415168280
16 303278916800906999191
17 8330190277527648516572
18 230814933905555392525290

List of values

[1, 4, 38, 504, 8249, 154036, 3149326, 68741880, 1576163328, 37548785408, 922252542128, 23222906277952, 596981991939677, 15616173859832740, 414621835401615110, 11150969618415168280, 303278916800906999191, 8330190277527648516572, 230814933905555392525290]