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.

A218111 Number of transitive reflexive early confluent binary relations R on n+1 labeled elements with max_{x}(|{y : xRy}|) = n.

Table of values

n a(n)
0 0
1 1
2 12
3 106
4 1035
5 11301
6 137774
7 1863044
8 27733869
9 451238935
10 7972318200
11 152065270974
12 3115418734415
13 68245059703289
14 1591993733475570
15 39406010771574856
16 1031649940977825633
17 28483179899706237483
18 827159099070697636124
19 25205610503231757308450

List of values

[0, 1, 12, 106, 1035, 11301, 137774, 1863044, 27733869, 451238935, 7972318200, 152065270974, 3115418734415, 68245059703289, 1591993733475570, 39406010771574856, 1031649940977825633, 28483179899706237483, 827159099070697636124, 25205610503231757308450]

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

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