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 A153158 A007916(n)^2. 6
 4, 9, 25, 36, 49, 100, 121, 144, 169, 196, 225, 289, 324, 361, 400, 441, 484, 529, 576, 676, 784, 841, 900, 961, 1089, 1156, 1225, 1369, 1444, 1521, 1600, 1681, 1764, 1849, 1936, 2025, 2116, 2209, 2304, 2500, 2601, 2704, 2809, 2916, 3025, 3136, 3249, 3364 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS 2^2=4, 3^2=9, 4^2=16=2^4 is not in the sequence, 5^2=25, 6^2=36, ... LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..1000 FORMULA GCD(exponents in prime factorization of a(n)) = 2, cf. A124010. [Reinhard Zumkeller, Apr 13 2012] MATHEMATICA Select[Range[2, 100], GCD@@Last/@FactorInteger@#==1&]^2 PROG (Haskell) a153158 n = a153158_list !! (n-1) a153158_list = filter ((== 2) . foldl1 gcd . a124010_row) [2..] -- Reinhard Zumkeller, Apr 13 2012 CROSSREFS Cf. A007916, A153147, A153157, A153159, A153160, A062503. Sequence in context: A182120 A099998 A030140 * A111245 A062503 A248648 Adjacent sequences:  A153155 A153156 A153157 * A153159 A153160 A153161 KEYWORD nonn AUTHOR Vladimir Joseph Stephan Orlovsky, Dec 19 2008 EXTENSIONS Edited by Ray Chandler, Dec 22 2008 STATUS approved

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Last modified January 19 22:19 EST 2019. Contains 319310 sequences. (Running on oeis4.)