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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.

A057668 Number of minimal 7-covers of a labeled n-set.

Table of values

n a(n)
7 1
8 988
9 549102
10 226064280
11 76785889587
12 22762819040676
13 6092115565691584
14 1505097773271664000
15 348617485585838373333
16 76564317282173987801964
17 16080209472530744351164146
18 3250906483045575317042337960
19 635954979082842132795003641239

List of values

[1, 988, 549102, 226064280, 76785889587, 22762819040676, 6092115565691584, 1505097773271664000, 348617485585838373333, 76564317282173987801964, 16080209472530744351164146, 3250906483045575317042337960, 635954979082842132795003641239]

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

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