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.

A343279 a(n) = Stirling2(n, floor(n/2)).

Table of values

n a(n)
0 1
1 0
2 1
3 1
4 7
5 15
6 90
7 301
8 1701
9 7770
10 42525
11 246730
12 1323652
13 9321312
14 49329280
15 408741333
16 2141764053
17 20415995028
18 106175395755
19 1144614626805
20 5917584964655
21 71187132291275
22 366282500870286
23 4864251308951100
24 24930204590758260
25 362262620784874680

List of values

[1, 0, 1, 1, 7, 15, 90, 301, 1701, 7770, 42525, 246730, 1323652, 9321312, 49329280, 408741333, 2141764053, 20415995028, 106175395755, 1144614626805, 5917584964655, 71187132291275, 366282500870286, 4864251308951100, 24930204590758260, 362262620784874680]

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

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