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.

A209454 a(n) = Pell(n)*A033719(n) for n>=1, with a(0)=1, where A033719 lists the coefficients in theta_3(q)*theta_3(q^7).

Table of values

n a(n)
0 1
1 2
2 0
3 0
4 24
5 0
6 0
7 338
8 1632
9 1970
10 0
11 22964
12 0
13 0
14 0
15 0
16 2824992
17 0
18 0
19 0
20 0
21 0
22 0
23 900234724
24 0
25 2623476242
26 0
27 0
28 36915112104
29 178241928596
30 0
31 0
32 5016108528384
33 0
34 0
35 0
36 42600007379160
37 205691031143924
38 0
39 0
40 0
41 0
42 0
43 40725785296405556
44 98320743200877072
45 0
46 0
47 0
48 0

List of values

[1, 2, 0, 0, 24, 0, 0, 338, 1632, 1970, 0, 22964, 0, 0, 0, 0, 2824992, 0, 0, 0, 0, 0, 0, 900234724, 0, 2623476242, 0, 0, 36915112104, 178241928596, 0, 0, 5016108528384, 0, 0, 0, 42600007379160, 205691031143924, 0, 0, 0, 0, 0, 40725785296405556, 98320743200877072, 0, 0, 0, 0]