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.

A001374 Number of relational systems on n nodes. Also number of directed 3-multigraphs with loops on n nodes.

Table of values

n a(n)
1 4
2 136
3 44224
4 179228736
5 9383939974144
6 6558936236286040064
7 62879572771326489528942592
8 8439543710699844562674685252214784
9 16110027001555070629022725866559372785352704
10 442829046878106126159584032189649757399796014050181120

List of values

[4, 136, 44224, 179228736, 9383939974144, 6558936236286040064, 62879572771326489528942592, 8439543710699844562674685252214784, 16110027001555070629022725866559372785352704, 442829046878106126159584032189649757399796014050181120]

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

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