OFFSET
1,1
COMMENTS
EXAMPLE
The number 10101101 belongs to this sequence as its decimal expansion can be covered by copies of its proper prefix 101:
101
101
101
........
10101101
PROG
(PARI) is(w) = { my (tt=0); for (l=1, oo, my (t=w%(10^l)); if (t!=tt, if (t==w, return (0)); my (r=w, g=l); while (g-->=0 && r>=t, r \= 10; if (r%(10^l)==t, if (r==t, return (1), g=l))); tt = t)) }
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Rémy Sigrist, Jan 21 2024
STATUS
approved