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 A069895 2^a(n) divides (2n)^(2n): exponent of 2 in (2n)^(2n). 5
 2, 8, 6, 24, 10, 24, 14, 64, 18, 40, 22, 72, 26, 56, 30, 160, 34, 72, 38, 120, 42, 88, 46, 192, 50, 104, 54, 168, 58, 120, 62, 384, 66, 136, 70, 216, 74, 152, 78, 320, 82, 168, 86, 264, 90, 184, 94, 480, 98, 200, 102, 312, 106, 216, 110, 448, 114, 232, 118, 360, 122 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS R. Stephan, Some divide-and-conquer sequences ... R. Stephan, Table of generating functions FORMULA a(n) = n*A001511(n) = A001511(A000312(n)) G.f. sum(k>=0, 2^(k+1)*x^2^k/(1-x^2^k)^2). - Ralf Stephan, Jun 07 2003 a(n) = 2*n*A001511(n) = 2*A001511(A000312(n)). MATHEMATICA Table[ Part[ Flatten[ FactorInteger[n^n]], 2], {n, 2, 124, 2}] CROSSREFS Cf. A001511, A007814, A000312. Sequence in context: A019243 A100871 A111860 * A085590 A079538 A098221 Adjacent sequences:  A069892 A069893 A069894 * A069896 A069897 A069898 KEYWORD easy,nonn AUTHOR Labos E. (labos(AT)ana.sote.hu), Apr 10 2002 STATUS approved

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