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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.

A076900 Expansion of e.g.f.: 1/Product_{m>0} (1-x^m/(m-1)!).

Table of values

n a(n)
0 1
1 1
2 4
3 15
4 88
5 505
6 4056
7 31549
8 311816
9 3083049
10 36343720
11 431215741
12 5937234348
13 82236865165
14 1291252453050
15 20477737537755
16 361495828272496
17 6449450737736065
18 126566562342343176
19 2509520619696338269
20 54179963857121953460
21 1182248224137860933781

List of values

[1, 1, 4, 15, 88, 505, 4056, 31549, 311816, 3083049, 36343720, 431215741, 5937234348, 82236865165, 1291252453050, 20477737537755, 361495828272496, 6449450737736065, 126566562342343176, 2509520619696338269, 54179963857121953460, 1182248224137860933781]

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

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