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.

A318107 Triangle read by rows: T(n,k) = (3*n - 2*k)!/((n-k)!^3*k!).

Table of values

n a(n)
0 1
1 6
2 1
3 90
4 24
5 1
6 1680
7 630
8 60
9 1
10 34650
11 16800
12 2520
13 120
14 1
15 756756
16 450450
17 92400
18 7560
19 210
20 1
21 17153136
22 12108096
23 3153150
24 369600
25 18900
26 336
27 1
28 399072960
29 325909584
30 102918816
31 15765750
32 1201200
33 41580
34 504
35 1
36 9465511770
37 8779605120
38 3259095840
39 617512896
40 63063000
41 3363360
42 83160
43 720
44 1

List of values

[1, 6, 1, 90, 24, 1, 1680, 630, 60, 1, 34650, 16800, 2520, 120, 1, 756756, 450450, 92400, 7560, 210, 1, 17153136, 12108096, 3153150, 369600, 18900, 336, 1, 399072960, 325909584, 102918816, 15765750, 1201200, 41580, 504, 1, 9465511770, 8779605120, 3259095840, 617512896, 63063000, 3363360, 83160, 720, 1]