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.

A355175 Determinant of the n X n matrix [(i-j)^2 + d(i,j)]_{1<=i,j<=n}, where d(i,j) is 1 or 0 according as i = j or not.

Table of values

n a(n)
1 1
2 0
3 -9
4 45
5 931
6 6392
7 29205
8 104497
9 315469
10 838696
11 2018523
12 4482765
13 9314943
14 18301648
15 34277321
16 61592769
17 106738105
18 179155504
19 292282207
20 464869581
21 722629755
22 1100267400
23 1643960605
24 2414361521
25 3490194501
26 4972536856
27 6989875075
28 9704037421
29 13317112215
30 18079469856
31 24299015697
32 32351810305
33 42694203377
34 55876637664

List of values

[1, 0, -9, 45, 931, 6392, 29205, 104497, 315469, 838696, 2018523, 4482765, 9314943, 18301648, 34277321, 61592769, 106738105, 179155504, 292282207, 464869581, 722629755, 1100267400, 1643960605, 2414361521, 3490194501, 4972536856, 6989875075, 9704037421, 13317112215, 18079469856, 24299015697, 32351810305, 42694203377, 55876637664]