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.

A136337 Triangular sequence from both a quartic expansion polynomial and a four deep polynomial recursion: Expansion polynomial: f(x,t)=1/(1 - 2*x*t + t^4); Recursion polynomials: p(x, n) = 2*x*p(x, n - 1) - p(x, n - 4);.

Table of values

n a(n)
1 1
2 0
3 2
4 0
5 0
6 4
7 0
8 0
9 0
10 8
11 -1
12 0
13 0
14 0
15 16
16 0
17 -4
18 0
19 0
20 0
21 32
22 0
23 0
24 -12
25 0
26 0
27 0
28 64
29 0
30 0
31 0
32 -32
33 0
34 0
35 0
36 128
37 1
38 0
39 0
40 0
41 -80
42 0
43 0
44 0
45 256
46 0
47 6
48 0
49 0
50 0
51 -192
52 0
53 0
54 0
55 512
56 0
57 0
58 24
59 0
60 0
61 0
62 -448
63 0
64 0
65 0
66 1024

List of values

[1, 0, 2, 0, 0, 4, 0, 0, 0, 8, -1, 0, 0, 0, 16, 0, -4, 0, 0, 0, 32, 0, 0, -12, 0, 0, 0, 64, 0, 0, 0, -32, 0, 0, 0, 128, 1, 0, 0, 0, -80, 0, 0, 0, 256, 0, 6, 0, 0, 0, -192, 0, 0, 0, 512, 0, 0, 24, 0, 0, 0, -448, 0, 0, 0, 1024]