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.

A360718 Number of idempotent Boolean relation matrices on [n] that have no proper power primitive.

Table of values

n a(n)
0 1
1 2
2 9
3 52
4 459
5 5526
6 91161
7 2039024
8 62264215
9 2618031658
10 153147765333
11 12544274587956
12 1443661355799075
13 233590364506712318
14 53152637809972391281
15 17010099259539378971368
16 7660283773351147860024879
17 4856904906875123474086041426

List of values

[1, 2, 9, 52, 459, 5526, 91161, 2039024, 62264215, 2618031658, 153147765333, 12544274587956, 1443661355799075, 233590364506712318, 53152637809972391281, 17010099259539378971368, 7660283773351147860024879, 4856904906875123474086041426]

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

Content is available under The OEIS End-User License Agreement.