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 A171783 Third smallest divisor of smallest number having exactly n divisors. 3
 4, 3, 4, 3, 4, 3, 3, 3, 4, 3, 4, 3, 3, 3, 4, 3, 4, 3, 3, 3, 4, 3, 3, 3, 3, 3, 4, 3, 4, 3, 3, 3, 3, 3, 4, 3, 3, 3, 4, 3, 4, 3, 3, 3, 4, 3, 3, 3, 3, 3, 4, 3, 3, 3, 3, 3, 4, 3, 4, 3, 3, 3, 3, 3, 4, 3, 3, 3, 4, 3, 4, 3, 3, 3, 3, 3, 4, 3, 3, 3, 4, 3, 3, 3, 3, 3, 4, 3, 3, 3, 3, 3, 3, 3, 4, 3, 3, 3, 4, 3, 4, 3, 3, 3, 4 (list; graph; refs; listen; history; text; internal format)
 OFFSET 3,1 COMMENTS Conjecture: a(n) = 4 for all prime numbers >= 3 and 3 for all composites Third column of triangle in A081532. - N. J. A. Sloane, Oct 12 2010. LINKS Antti Karttunen, Table of n, a(n) for n = 3..2000 (computed from the b-file of A005179 provided by Don Reble) FORMULA a(n) = A292269(A005179(n)) for n >= 3. - Antti Karttunen, Oct 04 2017 EXAMPLE a(4) = 3 because the divisors of 6 are 1, 2, 3, 6. CROSSREFS Cf. A081532, A171784. - N. J. A. Sloane, Oct 12 2010. Cf. A005179, A292269. Sequence in context: A108171 A231475 A106055 * A251767 A168309 A103947 Adjacent sequences:  A171780 A171781 A171782 * A171784 A171785 A171786 KEYWORD nonn AUTHOR J. Lowell, Oct 12 2010 EXTENSIONS More terms from R. J. Mathar, Oct 13 2010 STATUS approved

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Last modified March 18 22:11 EDT 2019. Contains 321305 sequences. (Running on oeis4.)