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.

A053141 a(0)=0, a(1)=2 then a(n) = a(n-2) + 2*sqrt(8*a(n-1)^2 + 8*a(n-1) + 1).

Table of values

n a(n)
0 0
1 2
2 14
3 84
4 492
5 2870
6 16730
7 97512
8 568344
9 3312554
10 19306982
11 112529340
12 655869060
13 3822685022
14 22280241074
15 129858761424
16 756872327472
17 4411375203410
18 25711378892990
19 149856898154532
20 873430010034204
21 5090723162050694
22 29670908962269962
23 172934730611569080

List of values

[0, 2, 14, 84, 492, 2870, 16730, 97512, 568344, 3312554, 19306982, 112529340, 655869060, 3822685022, 22280241074, 129858761424, 756872327472, 4411375203410, 25711378892990, 149856898154532, 873430010034204, 5090723162050694, 29670908962269962, 172934730611569080]