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.

A225991 Number of pairs of orthogonal (-1,4) vectors of length 5*n.

Table of values

n a(n)
1 45
2 26010
3 21594300
4 15593341800
5 11432293516320
6 8690522384325600
7 6699690552347865600
8 5206881575348541978240
9 4077143683681515029088000
10 3212142498665023117259125760
11 2542945288539007875744064972800

List of values

[45, 26010, 21594300, 15593341800, 11432293516320, 8690522384325600, 6699690552347865600, 5206881575348541978240, 4077143683681515029088000, 3212142498665023117259125760, 2542945288539007875744064972800]

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

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