I work in accounting.
I just wanted to make a comment on https://oeis.org/A005898 about centered cubes. For all N > 3, the Centered cube number = 2331 in base N.
For example, if N = 10, the result is 2331 in base 10. If N = 16, the result is 2331 in base 16, or 9009 in base 10. This is true up to base 36, possibly higher. I just thought this was really cool, not sure if it has any scientific significance.