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A086204 Decimal equivalents of strings in A086884. 1
2, 2, 47, 151, 4001, 4001, 100207, 41532851, 447045215857, 282607273285049 (list; graph; refs; listen; history; internal format)
OFFSET

2,1

EXAMPLE

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.

MATHEMATICA

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}]

CROSSREFS

Sequence in context: A152016 A156467 A015167 * A037292 A187024 A028372

Adjacent sequences:  A086201 A086202 A086203 * A086205 A086206 A086207

KEYWORD

nonn,base

AUTHOR

Richard FitzHugh (fitzhughrichard(AT)hotmail.com), Aug 22 2003

EXTENSIONS

Edited by Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 24 2003

Two more terms added James G. Merickel (merk7(AT)verizon.net), Feb 15 2010

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Last modified February 14 02:39 EST 2012. Contains 205567 sequences.