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.

A232820 Imaginary part of the sum over the n-th powers of all Gaussian integers in the n X n base square in the first quadrant.

Table of values

n a(n)
1 1
2 18
3 144
4 0
5 -28200
6 -814968
7 -15203328
8 0
9 16696909080
10 893794451000
11 25789252433472
12 0
13 -54804262577596532
14 -4044941639317807200
15 -161017938434267136000
16 0
17 621130358284578576358416
18 59512584052525004199214632
19 3008072527724272784969384000
20 0

List of values

[1, 18, 144, 0, -28200, -814968, -15203328, 0, 16696909080, 893794451000, 25789252433472, 0, -54804262577596532, -4044941639317807200, -161017938434267136000, 0, 621130358284578576358416, 59512584052525004199214632, 3008072527724272784969384000, 0]