21 Dec
2018
21 Dec
'18
1:44 a.m.
But as balanced ternary demonstrates, that's not the only choice. Will any set of R consecutive digits do, so long as one of them is 0? For instance almost-balanced decimal, where the decimal digits are -4 through +5? Will any other set do?
Other weird sets are possible. I have a vague recollection that digit sets in base ten are possible with gaps. But a search through my literature pile has been unsuccessful in tracking down the paper.
Matula's paper is good. See OEIS A110081. -- Don Reble djr@nk.ca