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.

A342245 Number of ordered pairs (S,T) of n X n idempotent matrices over GF(2) such that ST = TS = S.

Table of values

n a(n)
0 1
1 3
2 21
3 339
4 12483
5 1074339
6 219474243
7 107174166147
8 126918737362179
9 367662330459585027
10 2614066808849501254659
11 45985259502347910886975491
12 2009925824909891218929491103747
13 218411680908756813835229484489351171
14 59296916710446845619466630380450779971587

List of values

[1, 3, 21, 339, 12483, 1074339, 219474243, 107174166147, 126918737362179, 367662330459585027, 2614066808849501254659, 45985259502347910886975491, 2009925824909891218929491103747, 218411680908756813835229484489351171, 59296916710446845619466630380450779971587]

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

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