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.

A375501 a(n) = Sum_{k=0..n} (-1)^k*A001595(k)^2.

Table of values

n a(n)
0 1
1 0
2 9
3 -16
4 65
5 -160
6 465
7 -1216
8 3273
9 -8608
10 22721
11 -59648
12 156577
13 -410432
14 1075529
15 -2817200
16 7378049
17 -19319840
18 50586481
19 -132447360
20 346768521
21 -907878720
22 2376901249
23 -6222878976
24 16291823425
25 -42652732800
26 111666604425
27 -292347451216
28 765376349633
29 -2003782568608

List of values

[1, 0, 9, -16, 65, -160, 465, -1216, 3273, -8608, 22721, -59648, 156577, -410432, 1075529, -2817200, 7378049, -19319840, 50586481, -132447360, 346768521, -907878720, 2376901249, -6222878976, 16291823425, -42652732800, 111666604425, -292347451216, 765376349633, -2003782568608]