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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.

A326964 Number of connected set-systems covering a subset of {1..n}.

Table of values

n a(n)
0 1
1 2
2 7
3 112
4 32253
5 2147316942
6 9223372023968335715
7 170141183460469231667123699322514272668
8 5789604461865809771178549250434395393752402807429031284280914691514037561273

List of values

[1, 2, 7, 112, 32253, 2147316942, 9223372023968335715, 170141183460469231667123699322514272668, 5789604461865809771178549250434395393752402807429031284280914691514037561273]

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

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