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.

A346679 Expansion of Product_{k>=1} (1 + x^k*(1+x)) / (1 - x^k*(1+x)).

Table of values

n a(n)
0 1
1 2
2 6
3 14
4 32
5 68
6 140
7 280
8 544
9 1034
10 1930
11 3544
12 6416
13 11472
14 20288
15 35532
16 61696
17 106304
18 181906
19 309362
20 523228
21 880576
22 1475424
23 2462302
24 4094682
25 6787588
26 11219504
27 18498094
28 30429502
29 49955706
30 81864400
31 133940690
32 218834842
33 357090226
34 582050680

List of values

[1, 2, 6, 14, 32, 68, 140, 280, 544, 1034, 1930, 3544, 6416, 11472, 20288, 35532, 61696, 106304, 181906, 309362, 523228, 880576, 1475424, 2462302, 4094682, 6787588, 11219504, 18498094, 30429502, 49955706, 81864400, 133940690, 218834842, 357090226, 582050680]