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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.

A375612 Triangle read by rows: T(n, k) = n! * 4^k * hypergeom([-k], [-n], -1/4).

Table of values

n a(n)
0 1
1 1
2 3
3 2
4 7
5 25
6 6
7 22
8 81
9 299
10 24
11 90
12 338
13 1271
14 4785
15 120
16 456
17 1734
18 6598
19 25121
20 95699
21 720
22 2760
23 10584
24 40602
25 155810
26 598119
27 2296777
28 5040
29 19440
30 75000
31 289416
32 1117062
33 4312438
34 16651633
35 64309755
36 40320
37 156240
38 605520
39 2347080
40 9098904
41 35278554
42 136801778
43 530555479
44 2057912161

List of values

[1, 1, 3, 2, 7, 25, 6, 22, 81, 299, 24, 90, 338, 1271, 4785, 120, 456, 1734, 6598, 25121, 95699, 720, 2760, 10584, 40602, 155810, 598119, 2296777, 5040, 19440, 75000, 289416, 1117062, 4312438, 16651633, 64309755, 40320, 156240, 605520, 2347080, 9098904, 35278554, 136801778, 530555479, 2057912161]

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

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