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A199325
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Primes with digits '0', '1' and '5' only.
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19
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5, 11, 101, 151, 1051, 1151, 1511, 5011, 5051, 5101, 5501, 10111, 10151, 10501, 11551, 15101, 15511, 15551, 50051, 50101, 50111, 50551, 51001, 51151, 51511, 51551, 55001, 55051, 55501, 55511, 100151, 100501, 100511, 101051, 101111, 101501, 110051, 110501, 115001, 115151, 150001, 150011, 150151, 150551
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OFFSET
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1,1
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LINKS
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Table of n, a(n) for n=1..44.
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PROG
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(PARI) L=[0, 1, 5]; for(d=1, 6, u=vector(d, i, 10^(d-i))~; forvec(v=vector(d, i, [1+(i==1 & !L[1]), #L]), ispseudoprime(t=vector(d, i, L[v[i]])*u)&print1(t", "))) /* see A199327 for a function a() */
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CROSSREFS
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Cf. A020449 - A020472, A199326 - A199329, A061247.
Sequence in context: A053778 A030079 A066596 * A199305 A096473 A007530
Adjacent sequences: A199322 A199323 A199324 * A199326 A199327 A199328
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KEYWORD
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nonn,base
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AUTHOR
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M. F. Hasler, Nov 05 2011
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STATUS
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approved
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