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.

A305612 Expansion of 1/2 * (((1 + 2*x)/(1 - 2*x))^(3/2) - 1).

Table of values

n a(n)
0 0
1 3
2 9
3 22
4 51
5 114
6 250
7 540
8 1155
9 2450
10 5166
11 10836
12 22638
13 47124
14 97812
15 202488
16 418275
17 862290
18 1774630
19 3646500
20 7482618
21 15334748
22 31391724
23 64194312
24 131151566
25 267711444
26 546031500
27 1112864200
28 2266587900
29 4613409000
30 9384609960
31 19079454960

List of values

[0, 3, 9, 22, 51, 114, 250, 540, 1155, 2450, 5166, 10836, 22638, 47124, 97812, 202488, 418275, 862290, 1774630, 3646500, 7482618, 15334748, 31391724, 64194312, 131151566, 267711444, 546031500, 1112864200, 2266587900, 4613409000, 9384609960, 19079454960]