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.

A114121 Expansion of (sqrt(1 - 4*x) + (1 - 2*x))/(2*(1 - 4*x)).

Table of values

n a(n)
0 1
1 2
2 7
3 26
4 99
5 382
6 1486
7 5812
8 22819
9 89846
10 354522
11 1401292
12 5546382
13 21977516
14 87167164
15 345994216
16 1374282019
17 5461770406
18 21717436834
19 86392108636
20 343801171354
21 1368640564996
22 5450095992964
23 21708901408216
24 86492546019214

List of values

[1, 2, 7, 26, 99, 382, 1486, 5812, 22819, 89846, 354522, 1401292, 5546382, 21977516, 87167164, 345994216, 1374282019, 5461770406, 21717436834, 86392108636, 343801171354, 1368640564996, 5450095992964, 21708901408216, 86492546019214]