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 A199325 Primes with digits '0', '1' and '5' only. 19
 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 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS PROG (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() */ CROSSREFS Cf. A020449 - A020472, A199326 - A199329, A061247. Sequence in context: A053778 A030079 A066596 * A199305 A096473 A007530 Adjacent sequences:  A199322 A199323 A199324 * A199326 A199327 A199328 KEYWORD nonn,base AUTHOR M. F. Hasler, Nov 05 2011 STATUS approved

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