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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.

A335849 a(0) = 1; a(n) = Sum_{k=1..n} binomial(n,k) * Bell(k-1) * a(n-k).

Table of values

n a(n)
0 1
1 1
2 3
3 14
4 87
5 675
6 6282
7 68201
8 846183
9 11811048
10 183176577
11 3124958179
12 58157682072
13 1172551946395
14 25459025908899
15 592263131497942
16 14696581853565723
17 387477880784385143
18 10816856730117090114
19 318739828787430822853
20 9886623306152849028771

List of values

[1, 1, 3, 14, 87, 675, 6282, 68201, 846183, 11811048, 183176577, 3124958179, 58157682072, 1172551946395, 25459025908899, 592263131497942, 14696581853565723, 387477880784385143, 10816856730117090114, 318739828787430822853, 9886623306152849028771]

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

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