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A068167
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Define an increasing sequence as follows. Given the first term called the seed (the seed need not have the property of the sequence.). Subsequent terms are defined as obtained by inserting/placing digits (at least one) in the previous term to obtain the smallest number with a given property. This is the growing prime sequence for the seed a(1) = 2.
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7
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2, 23, 223, 1223, 10223, 102023, 1020023, 10200263, 102002603, 1020026303, 10200226303, 102002263031, 1020002263031, 10200022363031, 102000223263031, 1020000223263031, 10200002232630131, 102000022326301313
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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EXAMPLE
| The primes obtained by inserting/placing a digit in a(2) = 23 are 223,233,239,263,283,293 etc. a(3) = 223 is the smallest.
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CROSSREFS
| Cf. A068166.
Sequence in context: A062600 A069590 A024028 * A030456 A069837 A069629
Adjacent sequences: A068164 A068165 A068166 * A068168 A068169 A068170
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KEYWORD
| base,nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Feb 25 2002
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EXTENSIONS
| Corrected and extended by Robert Gerbicz (gerbicz(AT)freemail.hu), Sep 06 2002
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