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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.

A306000 Number of labeled intersecting set-systems with no singletons covering some subset of {1,...,n}.

Table of values

n a(n)
0 1
1 1
2 2
3 16
4 864
5 1150976
6 899934060544
7 291136684662192699604992
8 14704020783497694096990514485197495566069661696
9 12553242487939982849962414795232892198542733625222671042878037323112413463887484853594095616

List of values

[1, 1, 2, 16, 864, 1150976, 899934060544, 291136684662192699604992, 14704020783497694096990514485197495566069661696, 12553242487939982849962414795232892198542733625222671042878037323112413463887484853594095616]

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

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