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 A182853 Squarefree composite integers and powers of squarefree composite integers. 14
 6, 10, 14, 15, 21, 22, 26, 30, 33, 34, 35, 36, 38, 39, 42, 46, 51, 55, 57, 58, 62, 65, 66, 69, 70, 74, 77, 78, 82, 85, 86, 87, 91, 93, 94, 95, 100, 102, 105, 106, 110, 111, 114, 115, 118, 119, 122, 123, 129, 130, 133, 134, 138, 141, 142, 143, 145, 146, 154, 155, 158, 159, 161 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Numbers that require exactly three iterations to reach a fixed point under the x -> A181819(x) map. In each case, 2 is the fixed point that is reached. (1 is the other fixed point of the x -> A181819(x) map.) Cf. A182850. Numbers such that A001221(n) > 1 and A071625(n) = 1. LINKS Antti Karttunen, Table of n, a(n) for n = 1..10000 Eric Weisstein's World of Mathematics, Fixed Point Eric Weisstein's World of Mathematics, Map PROG (Scheme) (define A182853 (MATCHING-POS 1 1 (lambda (n) (= 3 (A182850 n))))) ;; After the alternative definition of the sequence given by the original author. Requires also MATCHING-POS macro from my IntSeq-library - Antti Karttunen, Feb 05 2016 (PARI) isoka(n) = (omega(n) > 1) && issquarefree(n); \\ A120944 isok(n) = isoka(n) || (ispower(n, , &k) && isoka(k)); \\ Michel Marcus, Jun 24 2017 CROSSREFS Numbers n such that A182850(n) = 3. See also A182854, A182855. Subsequence of A072774 and A182851. Cf. A120944. Sequence in context: A130092 A289619 A329140 * A212168 A344585 A080365 Adjacent sequences:  A182850 A182851 A182852 * A182854 A182855 A182856 KEYWORD nonn,easy AUTHOR Matthew Vandermast, Jan 04 2011 STATUS approved

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Last modified July 25 16:39 EDT 2021. Contains 346291 sequences. (Running on oeis4.)