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.

A074585 a(n)= Sum_{j=0..floor(n/2)} A073145(2*j + q), where q = 2*(n/2 - floor(n/2)).

Table of values

n a(n)
0 3
1 -1
2 2
3 4
4 -3
5 3
6 8
7 -12
8 11
9 11
10 -30
11 32
12 13
13 -73
14 96
15 -8
16 -157
17 263
18 -110
19 -308
20 685
21 -485
22 -504
23 1676
24 -1653
25 -525
26 3858
27 -4984
28 605
29 8239
30 -13824
31 6192
32 15875
33 -35889
34 26210
35 25556
36 -87651
37 88307
38 24904
39 -200860
40 264267
41 -38501
42 -426622

List of values

[3, -1, 2, 4, -3, 3, 8, -12, 11, 11, -30, 32, 13, -73, 96, -8, -157, 263, -110, -308, 685, -485, -504, 1676, -1653, -525, 3858, -4984, 605, 8239, -13824, 6192, 15875, -35889, 26210, 25556, -87651, 88307, 24904, -200860, 264267, -38501, -426622]