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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.

A353289 a(n) = Sum_{k=0..floor(n/2)} (n-k)^k * |Stirling1(n-k,k)|.

Table of values

n a(n)
0 1
1 0
2 1
3 2
4 10
5 51
6 323
7 2354
8 19535
9 181606
10 1869549
11 21110063
12 259400501
13 3445913273
14 49207968328
15 751698726580
16 12231484211240
17 211208935989003
18 3857425360784596
19 74292198980174828
20 1504832580013205275
21 31980327844846620785
22 711498612995378484414

List of values

[1, 0, 1, 2, 10, 51, 323, 2354, 19535, 181606, 1869549, 21110063, 259400501, 3445913273, 49207968328, 751698726580, 12231484211240, 211208935989003, 3857425360784596, 74292198980174828, 1504832580013205275, 31980327844846620785, 711498612995378484414]

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

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