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.

A136305 Expansion of g.f. (3 -x +2*x^2)/(1 -3*x +2*x^2 -x^3).

Table of values

n a(n)
0 3
1 8
2 20
3 47
4 109
5 253
6 588
7 1367
8 3178
9 7388
10 17175
11 39927
12 92819
13 215778
14 501623
15 1166132
16 2710928
17 6302143
18 14650705
19 34058757
20 79177004
21 184064203
22 427897358
23 994740672
24 2312491503
25 5375890523
26 12497429235
27 29052998162
28 67540026539
29 157011512528

List of values

[3, 8, 20, 47, 109, 253, 588, 1367, 3178, 7388, 17175, 39927, 92819, 215778, 501623, 1166132, 2710928, 6302143, 14650705, 34058757, 79177004, 184064203, 427897358, 994740672, 2312491503, 5375890523, 12497429235, 29052998162, 67540026539, 157011512528]