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Search: id:A086204
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OFFSET
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2,1
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EXAMPLE
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a(5)=10010111 because 10010111 (base 2)=151, 10010111 (base 3)=2281,
10010111 (base 4)=16661 and 10010111 (base 5)=78781 are all prime and 10010111 is
smallest such string.
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MATHEMATICA
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a[n_] := (While[b = FromDigits[ IntegerDigits[k, 2]]; Union[ PrimeQ[ Table[ FromDigits[ IntegerDigits[b], i], {i, 2, n}]]] != {True}, k++ ]; b); k = 1; Do[ Print[ a[n]], {n, 2, 10}]
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CROSSREFS
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Adjacent sequences: A086201 A086202 A086203 this_sequence A086205 A086206 A086207
Sequence in context: A152016 A156467 A015167 this_sequence A037292 A028372 A130678
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KEYWORD
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nonn
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AUTHOR
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Richard FitzHugh (fitzhughrichard(AT)hotmail.com), Aug 22 2003
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EXTENSIONS
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Edited by Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 24 2003
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