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A068166
Define an increasing sequence as follows. Given the first term, called the seed (which need not share the property of the remaining terms), subsequent terms are obtained by inserting at least one digit in the previous term so as to obtain the smallest number with the specified property. This is the prime sequence with the seed a(1) = 1.
11
1, 11, 101, 1013, 10103, 100103, 1001003, 10010023, 100010023, 1000100239, 10001000239, 100010002039, 1000100020319, 10001000200319, 100001000200319, 1000010002000319, 10000100002000319, 100001000020003109, 1000010000200031039, 10000100002000310329
OFFSET
1,2
LINKS
EXAMPLE
The primes obtained by inserting/placing a digit in a(2) = 11 are 101, 113, 131, 181, 191, 211, 311, etc. and the smallest is 101, hence a(3) = 101.
CROSSREFS
Cf. A068167.
Sequence in context: A289466 A289532 A288826 * A199306 A282958 A283061
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Feb 25 2002
EXTENSIONS
Corrected and extended by Robert Gerbicz, Sep 06 2002
STATUS
approved