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Search: id:A093881
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| A093881 |
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Let n! = 2^a*3^b*5^c*7^d.... in canonical form then a(n) = concatenation a,b,c,d,... |
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1
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| 0, 1, 11, 31, 311, 421, 4211, 7211, 7411, 8421, 84211, 105211, 1052111, 1152211, 1163211, 1563211, 15632111, 16832111, 168321111, 188421111, 189431111, 199432111, 1994321111, 2304321111, 2306321111, 2406322111, 2436322111
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OFFSET
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1,3
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COMMENT
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n! is the least number with this canonical form.
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MATHEMATICA
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Do[Print[FromDigits[Last /@ FactorInteger[n! ]]], {n, 1, 30}] (Propper)
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CROSSREFS
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Sequence in context: A098264 A023279 A068715 this_sequence A111015 A023306 A068839
Adjacent sequences: A093878 A093879 A093880 this_sequence A093882 A093883 A093884
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KEYWORD
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base,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 22 2004
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EXTENSIONS
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More terms from Ryan Propper (rpropper(AT)stanford.edu), Jul 21 2005
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