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.

A302615 G.f.: Sum_{n>=0} (3 + (1+x)^n)^n / (4 + (1+x)^n)^(n+1).

Table of values

n a(n)
0 1
1 1
2 10
3 130
4 2390
5 56714
6 1644138
7 56327820
8 2226708772
9 99761490536
10 4995375316146
11 276464859358474
12 16757956600528786
13 1104116777798713154
14 78565751676021256606
15 6004629888868350015506
16 490572645247461234631946
17 42665124626946741636482996
18 3935474733572880332326074450
19 383756013888633346483785849474

List of values

[1, 1, 10, 130, 2390, 56714, 1644138, 56327820, 2226708772, 99761490536, 4995375316146, 276464859358474, 16757956600528786, 1104116777798713154, 78565751676021256606, 6004629888868350015506, 490572645247461234631946, 42665124626946741636482996, 3935474733572880332326074450, 383756013888633346483785849474]