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Search: id:A066150
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| A066150 |
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Maximal number of divisors of any n-digit number. |
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+0
3
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| 4, 12, 32, 64, 128, 240, 448, 768, 1344, 2304, 4032, 6720, 10752, 17280, 26880, 41472, 64512, 103680, 161280, 245760, 368640, 552960, 860160, 1290240, 1966080, 2764800, 4128768, 6193152, 8957952, 13271040, 19660800, 28311552, 41287680, 59719680, 88473600, 127401984, 181665792, 264241152, 382205952, 530841600
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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a(1) = 4 since 8 has 4 divisors and that is the record for 1-digit numbers.
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PROGRAM
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(PARI): a066150(m, n) = local(d, a, k, b); for(d=m, n, a=0; for(k=10^d, 10^(d+1)-1, b =numdiv(k); if(b>a, a=b)); print1(a, ", ")) a066150(0, 6)
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CROSSREFS
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Cf. A066151, A069650.
Sequence in context: A005104 A028921 A028922 this_sequence A133212 A127811 A138517
Adjacent sequences: A066147 A066148 A066149 this_sequence A066151 A066152 A066153
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KEYWORD
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nonn,base,easy
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AUTHOR
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Joseph L. Pe (joseph_l_pe(AT)hotmail.com), Dec 12 2001
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EXTENSIONS
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One more term from Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Dec 13 2001
Further terms from Vladeta Jovovic and Vladimir Baltic (vladeta(AT)Eunet.yu), Dec 16 2001
Extended further by David Wasserman (dwasserm(AT)earthlink.net), Jan 25 2002
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