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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.

A305843 Number of labeled spanning intersecting set-systems on n vertices.

Table of values

n a(n)
0 1
1 1
2 3
3 27
4 1245
5 1308285
6 912811093455
7 291201248260060977862887
8 14704022144627161780742038728709819246535634969
9 12553242487940503914363982718112298267975272588471811456164576678961759219689708372356843289

List of values

[1, 1, 3, 27, 1245, 1308285, 912811093455, 291201248260060977862887, 14704022144627161780742038728709819246535634969, 12553242487940503914363982718112298267975272588471811456164576678961759219689708372356843289]

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

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