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.

A248169 G.f.: AGM( (1-x)/(1+x), (1+3*x)/(1-3*x) ).

Table of values

n a(n)
0 1
1 2
2 6
3 18
4 46
5 146
6 398
7 1234
8 3454
9 10610
10 30230
11 92290
12 265670
13 808210
14 2343182
15 7110994
16 20720798
17 62774578
18 183617910
19 555559554
20 1629845726
21 4926370114
22 14486707710
23 43752525762
24 128909169334
25 389075915954
26 1148184115062
27 3463595977986
28 10235096852902

List of values

[1, 2, 6, 18, 46, 146, 398, 1234, 3454, 10610, 30230, 92290, 265670, 808210, 2343182, 7110994, 20720798, 62774578, 183617910, 555559554, 1629845726, 4926370114, 14486707710, 43752525762, 128909169334, 389075915954, 1148184115062, 3463595977986, 10235096852902]