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 A199325 Primes with digits '0', '1' and '5' only. 25
 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 Robert Israel, Table of n, a(n) for n = 1..10000 MAPLE N:= 10000: # to get the first N terms count:= 0: allowed:= {0, 1, 5}: nallowed:= nops(allowed): subst:= seq(i=allowed[i+1], i=0..nallowed-1): for d from 0 while count < N do   for x1 from 1 to nallowed-1 while count < N do     for t from 0 to nallowed^d-1 while count < N do       L:= subs(subst, convert(x1*nallowed^d+t, base, nallowed));       X:= add(L[i]*10^(i-1), i=1..d+1);       if isprime(X) then           count:= count+1;           A[count]:= X;       fi od od od: seq(A[n], n=1..N); # Robert Israel, Apr 20 2014 MATHEMATICA Select[FromDigits/@Tuples[{0, 1, 5}, 6], PrimeQ] (* Harvey P. Dale, Jul 23 2021 *) 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(n) */ (MAGMA) [p: p in PrimesUpTo(160000) | Set(Intseq(p)) subset [0, 1, 5]]; // Vincenzo Librandi, Apr 22 2014 CROSSREFS Cf. A020449 - A020472, A199326 - A199329, A061247, A199340 - A199349. 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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Last modified December 7 17:12 EST 2021. Contains 349582 sequences. (Running on oeis4.)