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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.

A218383 Number of nonempty subsets S of the powerset of a set of size n, that have the odd intersection property.

Table of values

n a(n)
1 1
2 6
3 63
4 2880
5 1942305
6 270460574370
7 2342736463012620110115
8 86772003564839307585762726826882765841700
9 59169757600268575861444773339439520868680468342509442047838072019506515900898085

List of values

[1, 6, 63, 2880, 1942305, 270460574370, 2342736463012620110115, 86772003564839307585762726826882765841700, 59169757600268575861444773339439520868680468342509442047838072019506515900898085]

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

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