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A128950
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a(n) is equal to the number of positive integers m less than or equal to 10^n such that m is not divisible by the prime 7 and is not divisible by at least one of the primes 2, 3 and 5.
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1
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83, 829, 8286, 82858, 828571, 8285715, 82857143, 828571429, 8285714286, 82857142858, 828571428571, 8285714285715, 82857142857143, 828571428571429, 8285714285714286, 82857142857142858, 828571428571428571
(list; graph; refs; listen; history; internal format)
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