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.

A218093 Number of transitive reflexive early confluent binary relations R on n labeled elements with max_{x}(|{y : xRy}|) = 3.

Table of values

n a(n)
3 13
4 106
5 1105
6 12075
7 141533
8 1812216
9 25188019
10 378725365
11 6135529675
12 106586385708
13 1976799958367
14 38978490654831
15 814024466784025
16 17943457752971680
17 416183933276776375
18 10128962147830237953
19 258021086313431979827
20 6863916836407264864380

List of values

[13, 106, 1105, 12075, 141533, 1812216, 25188019, 378725365, 6135529675, 106586385708, 1976799958367, 38978490654831, 814024466784025, 17943457752971680, 416183933276776375, 10128962147830237953, 258021086313431979827, 6863916836407264864380]

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

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