OFFSET
1,2
EXAMPLE
Take integer 23, for example; its digit 2 is part of a group of 2 identical digits (though belonging to two consecutive integers): ...12,23,33,44... The same can be said for the digit 3 in 23.
CROSSREFS
KEYWORD
base,easy,nonn
AUTHOR
Eric Angelini, Jan 18 2006
STATUS
approved