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.

A371027 a(n) = Sum_{k=1..n} binomial(n, k) * Pochhammer(1/4, k) * 4^k * a(n - k) for n > 0 and a(0) = 1. Row sums of triangle A371026.

Table of values

n a(n)
0 1
1 1
2 7
3 81
4 1299
5 26565
6 659655
7 19256265
8 645765435
9 24453391725
10 1031685317775
11 47978413923825
12 2437962646702275
13 134374287343821525
14 7984095179348863575
15 508687013361879977625
16 34593307096333435324875
17 2500919993138258679112125
18 191526329081848509391017375

List of values

[1, 1, 7, 81, 1299, 26565, 659655, 19256265, 645765435, 24453391725, 1031685317775, 47978413923825, 2437962646702275, 134374287343821525, 7984095179348863575, 508687013361879977625, 34593307096333435324875, 2500919993138258679112125, 191526329081848509391017375]