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 A066151 Smallest n-digit number with A066150(n) divisors. 7
 6, 60, 840, 7560, 83160, 720720, 8648640, 73513440, 735134400, 6983776800, 97772875200, 963761198400, 9316358251200, 97821761637600, 866421317361600, 8086598962041600, 74801040398884800, 897612484786617600 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS FORMULA a(n) = A005179(A066150(n)). [Max Alekseyev, Apr 29 2010] EXAMPLE a(1) = 6 since 6 has 4 divisors and that is the record for 1-digit numbers. a(1) = 6 since 6 has 4 divisors and k has at most 3 divisors for k < 6 and not more than 4 divisors for 6 < k <= 9. PROG (PARI): a066151(m, n) = local(d, a, k, b, c); for(d=m, n, a=0; for(k=10^d, 10^(d+1)-1, b=numdiv(k); if(b>a, a=b; c=k)); print1(c, ", ")) CROSSREFS Cf. A066150. Subsequence of A002182. Sequence in context: A259606 A168478 A101470 * A000407 A099708 A177191 Adjacent sequences:  A066148 A066149 A066150 * A066152 A066153 A066154 KEYWORD nonn,base,easy AUTHOR N. J. A. Sloane, Dec 13 2001 EXTENSIONS More terms from Klaus Brockhaus, Dec 17 2001 More terms from David Wasserman, Jan 25 2002 STATUS approved

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