1,2

The only numbers where the repeated digit and the number of digits are the same are 1, 88888888 and 999999999.

Robert P. Munafo, Kaprekar sequences at MROB

Sequence in context: A157588 A058849 A058852 this_sequence A068970 A141530 A016269

Adjacent sequences: A145872 A145873 A145874 this_sequence A145876 A145877 A145878

nonn

Howard Berman (howard_berman(AT)hotmail.com), Oct 22 2008