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.

A272658 Number of distinct characteristic polynomials of n X n matrices with elements {-1, 0, +1}.

Table of values

n	a(n)
0	1
1	3
2	16
3	209
4	8739
5	1839102

List of values

[1, 3, 16, 209, 8739, 1839102]

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

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