OFFSET
2,1
COMMENTS
Without the "same digits" constraint, one would get A198971. - Michel Marcus, Jun 24 2013
EXAMPLE
a(3)=243=GCD(729,972).
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Dmitry Tishkov (DimaTishkov(AT)yandex.ru), Feb 14 2007
STATUS
approved