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.

A385089 G.f.: Sum_{k>=0} x^k * Product_{j=1..3*k} (1 + x^j)/(1 - x^j).

Table of values

n a(n)
0 1
1 1
2 3
3 7
4 15
5 27
6 47
7 79
8 127
9 199
10 307
11 465
12 695
13 1025
14 1493
15 2151
16 3069
17 4337
18 6075
19 8441
20 11639
21 15933
22 21667
23 29281
24 39337
25 52555
26 69849
27 92375
28 121595
29 159347
30 207939
31 270259
32 349911
33 451377
34 580223
35 743341
36 949241
37 1208415
38 1533763
39 1941111
40 2449841
41 3083637

List of values

[1, 1, 3, 7, 15, 27, 47, 79, 127, 199, 307, 465, 695, 1025, 1493, 2151, 3069, 4337, 6075, 8441, 11639, 15933, 21667, 29281, 39337, 52555, 69849, 92375, 121595, 159347, 207939, 270259, 349911, 451377, 580223, 743341, 949241, 1208415, 1533763, 1941111, 2449841, 3083637]