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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.

A375600 Triangle read by rows: T(n, k) = n! * 3^k * hypergeom([-k], [-n], 2/3).

Table of values

n a(n)
0 1
1 1
2 5
3 2
4 8
5 34
6 6
7 22
8 82
9 314
10 24
11 84
12 296
13 1052
14 3784
15 120
16 408
17 1392
18 4768
19 16408
20 56792
21 720
22 2400
23 8016
24 26832
25 90032
26 302912
27 1022320
28 5040
29 16560
30 54480
31 179472
32 592080
33 1956304
34 6474736
35 21468848
36 40320
37 131040
38 426240
39 1387680
40 4521984
41 14750112
42 48162944
43 157438304
44 515252608

List of values

[1, 1, 5, 2, 8, 34, 6, 22, 82, 314, 24, 84, 296, 1052, 3784, 120, 408, 1392, 4768, 16408, 56792, 720, 2400, 8016, 26832, 90032, 302912, 1022320, 5040, 16560, 54480, 179472, 592080, 1956304, 6474736, 21468848, 40320, 131040, 426240, 1387680, 4521984, 14750112, 48162944, 157438304, 515252608]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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