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A069572
Smallest n-digit number in which the k-th digit (from the right!) is a divisor of k, greater than 1 unless k has no single-digit divisor > 1.
2
1, 21, 321, 2321, 52321, 252321, 7252321, 27252321, 327252321, 2327252321, 12327252321, 212327252321, 1212327252321, 21212327252321, 321212327252321, 2321212327252321, 12321212327252321, 212321212327252321
OFFSET
1,2
CROSSREFS
Sequence in context: A055434 A016315 A113531 * A260487 A057138 A104759
KEYWORD
nonn,base
AUTHOR
Amarnath Murthy, Mar 24 2002
EXTENSIONS
a(12) corrected by Martin Ward, Feb 12 2013
STATUS
approved