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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.

A357901 a(n) = Sum_{k=0..floor(n/3)} |Stirling1(n - 2*k,k)|.

Table of values

n a(n)
0 1
1 0
2 0
3 1
4 1
5 2
6 7
7 27
8 131
9 771
10 5320
11 42119
12 376174
13 3740018
14 40956593
15 489749100
16 6348744124
17 88677555115
18 1327628770657
19 21208195526882
20 360053293342379
21 6473501562355779
22 122874692176838047
23 2455382300127368557
24 51524333987938459606
25 1132787775301639812263

List of values

[1, 0, 0, 1, 1, 2, 7, 27, 131, 771, 5320, 42119, 376174, 3740018, 40956593, 489749100, 6348744124, 88677555115, 1327628770657, 21208195526882, 360053293342379, 6473501562355779, 122874692176838047, 2455382300127368557, 51524333987938459606, 1132787775301639812263]

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

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