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.

A301306 G.f.: Sum_{n>=0} (1 + (1+x)^n)^n * x^n.

Table of values

n a(n)
0 1
1 2
2 5
3 16
4 60
5 254
6 1188
7 6043
8 33080
9 193249
10 1197001
11 7819995
12 53648847
13 385090323
14 2883045424
15 22451716833
16 181437812058
17 1518374146260
18 13133970646948
19 117235109969112
20 1078235776311405
21 10204120439288725
22 99244762587719585
23 990878067150790140
24 10145281310155565842
25 106420501631411705747
26 1142671059786354295966
27 12548652816798990883431
28 140839029768184796119004

List of values

[1, 2, 5, 16, 60, 254, 1188, 6043, 33080, 193249, 1197001, 7819995, 53648847, 385090323, 2883045424, 22451716833, 181437812058, 1518374146260, 13133970646948, 117235109969112, 1078235776311405, 10204120439288725, 99244762587719585, 990878067150790140, 10145281310155565842, 106420501631411705747, 1142671059786354295966, 12548652816798990883431, 140839029768184796119004]