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.

A303306 Expansion of Product_{n>=1} ((1 - (2*x)^n)/(1 + (2*x)^n))^(1/2).

Table of values

n a(n)
0 1
1 -2
2 -2
3 -4
4 6
5 4
6 12
7 56
8 134
9 -108
10 196
11 328
12 -484
13 -88
14 -3752
15 -18576
16 16838
17 -16460
18 -95340
19 -24408
20 -201036
21 -472584
22 565544
23 1424144
24 1843356
25 -6632568
26 10365224
27 2317008
28 49620088
29 130484688
30 -4419664
31 631241440
32 761908550
33 -29690892
34 329427380
35 -8889717144
36 23673793860

List of values

[1, -2, -2, -4, 6, 4, 12, 56, 134, -108, 196, 328, -484, -88, -3752, -18576, 16838, -16460, -95340, -24408, -201036, -472584, 565544, 1424144, 1843356, -6632568, 10365224, 2317008, 49620088, 130484688, -4419664, 631241440, 761908550, -29690892, 329427380, -8889717144, 23673793860]