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 A132344 a(n) = n*2^(floor(n/2)). 0
 0, 1, 4, 6, 16, 20, 48, 56, 128, 144, 320, 352, 768, 832, 1792, 1920, 4096, 4352, 9216, 9728, 20480, 21504, 45056, 47104, 98304, 102400, 212992, 221184, 458752, 475136, 983040, 1015808, 2097152, 2162688, 4456448, 4587520, 9437184, 9699328, 19922944, 20447232, 41943040, 42991616 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Simon Plouffe, Illustration Index entries for linear recurrences with constant coefficients, signature (0,4,0,-4). FORMULA G.f.: x*(1 + 4*x + 2*x^2)/(1 - 2*x^2)^2. - Ilya Gutkovskiy, Feb 24 2017 a(n) = n*A016116(n). - Michel Marcus, Feb 17 2018 MAPLE seq(n*2^(floor(n/2)), n=1..120); MATHEMATICA Table[n*2^Floor[n/2], {n, 0, 100}] (* Wesley Ivan Hurt, Dec 12 2013 *) PROG (PARI) a(n) = n*2^(n\2); \\ Michel Marcus, Feb 17 2018 CROSSREFS Cf. A004526, A016116. Sequence in context: A304909 A302119 A120542 * A306905 A097970 A044858 Adjacent sequences:  A132341 A132342 A132343 * A132345 A132346 A132347 KEYWORD nonn,easy AUTHOR Simon Plouffe, Nov 19 2007 EXTENSIONS More terms from Michel Marcus, Feb 17 2018 STATUS approved

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Last modified December 7 00:36 EST 2019. Contains 329812 sequences. (Running on oeis4.)