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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.

A234459 Real part of the product of all the integer complex numbers in the square [1,1] to [n,n].

Table of values

n a(n)
1 1
2 -20
3 7800
4 530400000
5 2787453552000000
6 -7066368691421644800000000
7 3108366378804858902744832000000000000
8 1291087724942273632600239979303403520000000000000000

List of values

[1, -20, 7800, 530400000, 2787453552000000, -7066368691421644800000000, 3108366378804858902744832000000000000, 1291087724942273632600239979303403520000000000000000]

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

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