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Search: id:A114797
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| A114797 |
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n multiplied by the least non trivial non divisor of n. |
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+0
1
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| 6, 12, 10, 24, 14, 24, 18, 30, 22, 60, 26, 42, 30, 48, 34, 72, 38, 60, 42, 66, 46, 120, 50, 78, 54, 84, 58, 120, 62, 96, 66, 102, 70, 180, 74, 114, 78, 120, 82, 168, 86, 132, 90, 138, 94, 240, 98, 150, 102, 156, 106, 216, 110, 168, 114, 174, 118, 420, 122, 186, 126, 192
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OFFSET
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3,1
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COMMENT
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a(2n-1) = 4n-2. a(n!) = p*n! where p is the least prime > n. Because all the number from n+1, n+2 upto p-1 would divide n!.
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EXAMPLE
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a(24) = 24*5 = 120 as 2,3,4 divide 24.
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MATHEMATICA
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Do[l = Range[1, n]; m = Divisors[n]; s = Complement[l, m]; Print[n * Min[s]], {n, 3, 100}] - Ryan Propper (rpropper(AT)stanford.edu), Jul 21 2006
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CROSSREFS
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Sequence in context: A074474 A124349 A134383 this_sequence A048726 A092461 A102809
Adjacent sequences: A114794 A114795 A114796 this_sequence A114798 A114799 A114800
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KEYWORD
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nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 20 2005
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EXTENSIONS
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More terms from Ryan Propper (rpropper(AT)stanford.edu), Jul 21 2006
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