Grandpa, hanging around in the OEIS helping people to get their stuff in.
Love the history of mathematics, computational mathematics, and reverse engineering. Sometimes translate papers by Euler and Riemann.
I entertain myself with hacking and learning new computer languages.
I wish that TeX and CAS merge into one unity, eliminating any 'formula translating system'.
The image in the header is a photograph of some graffiti art that was once on the Berlin Wall.
(See Wikipedia: Berlin Wall.)
OEIS:
https://oeis.org/wiki/User:Peter_LuschnyGitHub:
https://github.com/PeterLuschny