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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.

A326951 Number of unlabeled sets of subsets of {1..n} where every covered vertex is the unique common element of some subset of the edges.

Table of values

n a(n)
0 2
1 4
2 8
3 40
4 2464

List of values

[2, 4, 8, 40, 2464]

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

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