Game of Life integers

[Jonathan Post]

But if you use Roman Numerals...

By the way, Eric, I first did the lower end of your sequence 39 years
ago in 1968 at Caltech in a language called CITRAN (derived from JOSS)
running on dumb terminals connected to an IBM 7090/7094 which did ALL
the computing for all departments of Caltech plus NASA JPL! John
Horton Conway was visiting Caltech for a while. Then I programmed the
game RISK onto the computer, arguably the first role-playing game in
software. But I digress...