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.

A328650 Triangular array read by rows: row n shows the coefficients of this polynomial of degree n: (1/n!)*(numerator of n-th derivative of 1)/(1-x-2x^2).

Table of values

n a(n)
0 -1
1 1
2 4
3 -3
4 -6
5 -12
6 5
7 24
8 24
9 32
10 -11
11 -50
12 -120
13 -80
14 -80
15 21
16 132
17 300
18 480
19 240
20 192
21 -43
22 -294
23 -924
24 -1400
25 -1680
26 -672
27 -448
28 85
29 688
30 2352
31 4928
32 5600
33 5376
34 1792
35 1024
36 -171
37 -1530
38 -6192
39 -14112
40 -22176
41 -20160
42 -16128
43 -4608
44 -2304
45 341
46 3420

List of values

[-1, 1, 4, -3, -6, -12, 5, 24, 24, 32, -11, -50, -120, -80, -80, 21, 132, 300, 480, 240, 192, -43, -294, -924, -1400, -1680, -672, -448, 85, 688, 2352, 4928, 5600, 5376, 1792, 1024, -171, -1530, -6192, -14112, -22176, -20160, -16128, -4608, -2304, 341, 3420]