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.

A154252 Expansion of (1-x+8x^2)/((1-x)(1-2x)) .

Table of values

n a(n)
0 1
1 2
2 12
3 32
4 72
5 152
6 312
7 632
8 1272
9 2552
10 5112
11 10232
12 20472
13 40952
14 81912
15 163832
16 327672
17 655352
18 1310712
19 2621432
20 5242872
21 10485752
22 20971512
23 41943032
24 83886072
25 167772152
26 335544312
27 671088632
28 1342177272
29 2684354552
30 5368709112
31 10737418232

List of values

[1, 2, 12, 32, 72, 152, 312, 632, 1272, 2552, 5112, 10232, 20472, 40952, 81912, 163832, 327672, 655352, 1310712, 2621432, 5242872, 10485752, 20971512, 41943032, 83886072, 167772152, 335544312, 671088632, 1342177272, 2684354552, 5368709112, 10737418232]