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 A233819 Least odd integer of each prime signature ordered by prime signatures occurrence. 3
 1, 3, 9, 15, 27, 45, 81, 135, 105, 243, 225, 405, 315, 729, 675, 1215, 945, 2187, 2025, 1575, 3645, 1155, 3375, 2835, 6561, 6075, 4725, 10935, 3465, 10125, 8505, 19683, 18225, 14175, 32805, 10395, 30375, 11025, 25515, 59049, 23625, 54675, 17325, 50625, 42525, 98415, 31185, 91125, 33075, 76545, 177147, 70875 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS a(n) is the least odd integer with the same prime signature of A025487(n). LINKS Amiram Eldar, Table of n, a(n) for n = 1..10000 Will Nicholes, Prime Signatures FORMULA a(n) = A003961(A025487(n)). - Amiram Eldar, Jun 23 2019 EXAMPLE a(7) is the first odd integer with prime signature {1,3} = 3^3*5 = 135 a(8) is the first odd integer with prime signature {1,1,1} = 3*5*7 = 105 CROSSREFS Cf. A003961, A025487, A147516. Sequence in context: A082897 A339886 A147516 * A131822 A131801 A280963 Adjacent sequences:  A233816 A233817 A233818 * A233820 A233821 A233822 KEYWORD nonn AUTHOR Lior Manor, Dec 16 2013 STATUS approved

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Last modified June 20 02:17 EDT 2021. Contains 345154 sequences. (Running on oeis4.)