cp's OEIS Frontend

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.

A326907 Number of non-isomorphic sets of subsets of {1..n} that are closed under union and cover all n vertices. First differences of A193675.

Table of values

n a(n)
0 2
1 2
2 6
3 28
4 330
5 28960
6 216562364
7 5592326182940100

List of values

[2, 2, 6, 28, 330, 28960, 216562364, 5592326182940100]

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

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