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.

A052949 Expansion of (2-4*x+x^3)/((1-x)*(1-2*x-x^2+x^3)).

Table of values

n a(n)
0 2
1 2
2 4
3 7
4 15
5 32
6 71
7 158
8 354
9 794
10 1783
11 4005
12 8998
13 20217
14 45426
15 102070
16 229348
17 515339
18 1157955
19 2601900
20 5846415
21 13136774
22 29518062
23 66326482
24 149034251
25 334876921
26 752461610
27 1690765889
28 3799116466
29 8536537210
30 19181424996

List of values

[2, 2, 4, 7, 15, 32, 71, 158, 354, 794, 1783, 4005, 8998, 20217, 45426, 102070, 229348, 515339, 1157955, 2601900, 5846415, 13136774, 29518062, 66326482, 149034251, 334876921, 752461610, 1690765889, 3799116466, 8536537210, 19181424996]