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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.

A356547 Triangle read by rows. T(n, k) are the coefficients of polynomials p_n(x) based on the Eulerian numbers of second order representing the Bernoulli numbers as B_n = p_n(1) / (2*(2*n - 1)!).

Table of values

n a(n)
0 1
1 1
2 0
3 6
4 -4
5 0
6 120
7 -192
8 72
9 0
10 5040
11 -15840
12 13920
13 -3456
14 0
15 362880
16 -2096640
17 3306240
18 -1918080
19 345600
20 0
21 39916800
22 -413683200
23 1053803520
24 -1064448000
25 448519680
26 -62208000
27 0
28 6227020800
29 -114960384000
30 447866496000
31 -699342336000
32 506348236800
33 -164428185600
34 18289152000
35 0

List of values

[1, 1, 0, 6, -4, 0, 120, -192, 72, 0, 5040, -15840, 13920, -3456, 0, 362880, -2096640, 3306240, -1918080, 345600, 0, 39916800, -413683200, 1053803520, -1064448000, 448519680, -62208000, 0, 6227020800, -114960384000, 447866496000, -699342336000, 506348236800, -164428185600, 18289152000, 0]