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.

A181144 G.f.: A(x,y) = exp( Sum_{n>=1} [Sum_{k=0..n} C(n,k)^4*y^k] * x^n/n ) = Sum_{n>=0,k=0..n} T(n,k)*x^n*y^k, as a triangle of coefficients T(n,k) read by rows.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 9
5 1
6 1
7 36
8 36
9 1
10 1
11 100
12 419
13 100
14 1
15 1
16 225
17 2699
18 2699
19 225
20 1
21 1
22 441
23 12138
24 35052
25 12138
26 441
27 1
28 1
29 784
30 42865
31 286206
32 286206
33 42865
34 784
35 1
36 1
37 1296
38 127191
39 1696820
40 3932898
41 1696820
42 127191
43 1296
44 1
45 1
46 2025
47 330903
48 7958563

List of values

[1, 1, 1, 1, 9, 1, 1, 36, 36, 1, 1, 100, 419, 100, 1, 1, 225, 2699, 2699, 225, 1, 1, 441, 12138, 35052, 12138, 441, 1, 1, 784, 42865, 286206, 286206, 42865, 784, 1, 1, 1296, 127191, 1696820, 3932898, 1696820, 127191, 1296, 1, 1, 2025, 330903, 7958563]