OFFSET
1,2
COMMENTS
This sequence is a derangement of the zeroless numbers; any 0 digit in a(n) would force a division by zero later in the sequence.
LINKS
Jean-Marc Falcoz, Table of n, a(n) for n = 1..20010
EXAMPLE
The sequence starts with 1,2,3,4,5,6,7,8,9,11,12,13,14,15,18,16,24,17,25,19,32,21,...
The first nine terms speak for themselves;
the 10th digit of the sequence is 1 and 1 is a divisor of a(10) = 11;
the 11th digit of the sequence is 1 and 1 is a divisor of a(11) = 12;
the 12th digit of the sequence is 1 and 1 is a divisor of a(12) = 13;
the 13th digit of the sequence is 2 and 2 is a divisor of a(13) = 14;
the 14th digit of the sequence is 1 and 1 is a divisor of a(14) = 15;
the 15th digit of the sequence is 3 and 3 is a divisor of a(15) = 18;
etc.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Eric Angelini and Jean-Marc Falcoz, Feb 06 2019
STATUS
approved