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.

A375446 Triangle read by rows: T(n, k) = n! * 3^k * hypergeom([-k], [-n], -1/3).

Table of values

n a(n)
0 1
1 1
2 2
3 2
4 5
5 13
6 6
7 16
8 43
9 116
10 24
11 66
12 182
13 503
14 1393
15 120
16 336
17 942
18 2644
19 7429
20 20894
21 720
22 2040
23 5784
24 16410
25 46586
26 132329
27 376093
28 5040
29 14400
30 41160
31 117696
32 336678
33 963448
34 2758015
35 7897952
36 40320
37 115920
38 333360
39 958920
40 2759064
41 7940514
42 22858094
43 65816267
44 189550849

List of values

[1, 1, 2, 2, 5, 13, 6, 16, 43, 116, 24, 66, 182, 503, 1393, 120, 336, 942, 2644, 7429, 20894, 720, 2040, 5784, 16410, 46586, 132329, 376093, 5040, 14400, 41160, 117696, 336678, 963448, 2758015, 7897952, 40320, 115920, 333360, 958920, 2759064, 7940514, 22858094, 65816267, 189550849]

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

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