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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.

A359561 a(n) is the determinant of an n X n Hermitian Toeplitz matrix whose first row consists of n, (n-1)*i, (n-2)*i, ..., 3*i, 2*i, i, where i denotes the imaginary unit.

Table of values

n a(n)
0 1
1 1
2 3
3 0
4 -256
5 -5000
6 -46656
7 941192
8 67108864
9 2066242608
10 24000000000
11 -1659995174464
12 -142657607172096
13 -5964309791355136
14 -76196618232397824
15 11210083593750000000
16 1180591620717411303424
17 62286325600853591655680
18 839390038939659468275712
19 -213252813410122222659258368

List of values

[1, 1, 3, 0, -256, -5000, -46656, 941192, 67108864, 2066242608, 24000000000, -1659995174464, -142657607172096, -5964309791355136, -76196618232397824, 11210083593750000000, 1180591620717411303424, 62286325600853591655680, 839390038939659468275712, -213252813410122222659258368]