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A107365 Indices of primes occurring in A030284. +0
2
1, 2, 3, 4, 5, 9, 13, 16, 18, 21, 24, 26, 48, 79, 99, 110, 129, 140, 187, 304, 566, 670, 798, 905, 1020, 1119, 1346, 2266, 3354, 5140, 7043, 7854, 10548, 17986, 26886, 33861, 42373, 49100, 57393, 63954, 72099, 148934, 290510, 348529, 483751, 539780 (list; graph; listen)
OFFSET

1,2

FORMULA

a(n)=pi(A030284(n))

MATHEMATICA

d=2; b={1}; Do[p=Prime[n]; If[Intersection@@IntegerDigits/@{d, p}=={}, b=Append[b, n]; d=p], {n, 100000000}]; b

CROSSREFS

Cf. A030284 = Primes whose digits do not appear in previous term.

Sequence in context: A076134 A101526 A140298 this_sequence A026484 A120760 A050160

Adjacent sequences: A107362 A107363 A107364 this_sequence A107366 A107367 A107368

KEYWORD

nonn

AUTHOR

Zak Seidov (zakseidov(AT)yahoo.com), May 24 2005

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Last modified December 4 15:51 EST 2008. Contains 151308 sequences.


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