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.

A261636 Expansion of Product_{k>=0} 1/(1-x^(4*k+1))^4.

Table of values

n a(n)
0 1
1 4
2 10
3 20
4 35
5 60
6 100
7 160
8 245
9 364
10 536
11 780
12 1115
13 1564
14 2166
15 2980
16 4065
17 5484
18 7326
19 9720
20 12830
21 16824
22 21902
23 28344
24 36510
25 46820
26 59736
27 75844
28 95910
29 120844
30 151688
31 189668
32 236330
33 293564
34 363542
35 448804
36 552425
37 678144
38 830338
39 1014052
40 1235296

List of values

[1, 4, 10, 20, 35, 60, 100, 160, 245, 364, 536, 780, 1115, 1564, 2166, 2980, 4065, 5484, 7326, 9720, 12830, 16824, 21902, 28344, 36510, 46820, 59736, 75844, 95910, 120844, 151688, 189668, 236330, 293564, 363542, 448804, 552425, 678144, 830338, 1014052, 1235296]