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A235694 Semiprimes which have one or more occurrences of exactly six different digits. 2
102347, 102349, 102369, 102379, 102385, 102386, 102387, 102389, 102394, 102395, 102398, 102439, 102457, 102458, 102463, 102467, 102469, 102473, 102478, 102479, 102493, 102549, 102569, 102574, 102589, 102637, 102639, 102649, 102658, 102659, 102683, 102689 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..32.

PROG

(PARI)

list(lim)=my(v=List(), t); forprime(p=2, sqrt(lim), t=p; forprime(q=p, lim\t, listput(v, t*q))); vecsort(Vec(v)) \\ From A001358

b=list(103000); s=[]; for(n=1, #b, if(#vecsort(eval(Vec(Str(b[n]))), , 8)==6, s=concat(s, b[n]))); s

CROSSREFS

Cf. A235690-A235693, A235695, A235696.

Cf. A235154-A235161.

Sequence in context: A186087 A106814 A220076 * A235158 A074669 A241789

Adjacent sequences:  A235691 A235692 A235693 * A235695 A235696 A235697

KEYWORD

nonn,base

AUTHOR

Colin Barker, Jan 14 2014

STATUS

approved

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Last modified September 20 08:10 EDT 2021. Contains 347577 sequences. (Running on oeis4.)