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.

A127411 Negative value of coefficient of x^(n-6) in the characteristic polynomial of a certain n X n integer circulant matrix.

Table of values

n a(n)
6 27216
7 453789
8 3866624
9 22674816
10 103500000
11 393286542
12 1297410048
13 3822832728
14 10267329072
15 25518796875
16 59378761728
17 130535973152
18 273106821312
19 547049504268
20 1054272000000
21 1962916959024
22 3543150344976
23 6218839661001
24 10640820731904
25 17789062500000

List of values

[27216, 453789, 3866624, 22674816, 103500000, 393286542, 1297410048, 3822832728, 10267329072, 25518796875, 59378761728, 130535973152, 273106821312, 547049504268, 1054272000000, 1962916959024, 3543150344976, 6218839661001, 10640820731904, 17789062500000]

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

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