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A323084
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k-digit numbers whose digit(s) are the number of distinct prime factors (with multiplicity) in each of the following k integers.
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1
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0, 1, 12, 21, 4224, 153426, 442451, 471614, 523291, 4336232, 474335342, 3624263478, 36443455382, 244936365228, 452527642826, 593326437534, 4372566243537
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listen;
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internal format)
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OFFSET
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1,3
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COMMENTS
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a(6)-a(12) found by Carlos Rivera.
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LINKS
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EXAMPLE
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4224 is a term because 4224 is a 4-digit number whose digits (4,2,2,4) are the number of prime factors (with multiplicity) in each of the following 4 integers; i.e., 4225 = 5^2*13^2 (four prime factors), 4226 = 2*2113 (two prime factors), 4227 = 3*1409 (two prime factors), and 4228 = 2^2*7*151 (four prime factors), therefore (4,2,2,4) -> 4224.
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CROSSREFS
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KEYWORD
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nonn,base,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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