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 A036487 a(n) = floor((n^3)/2). 9
 0, 0, 4, 13, 32, 62, 108, 171, 256, 364, 500, 665, 864, 1098, 1372, 1687, 2048, 2456, 2916, 3429, 4000, 4630, 5324, 6083, 6912, 7812, 8788, 9841, 10976, 12194, 13500, 14895, 16384, 17968, 19652, 21437, 23328, 25326, 27436, 29659, 32000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Enrique PĂ©rez Herrero, Table of n, a(n) for n = 0..10000 Index entries for linear recurrences with constant coefficients, signature (3,-2,-2,3,-1). FORMULA G.f. x^2*(4+x+x^2) / ( (1+x)*(x-1)^4 ). - R. J. Mathar, Jan 29 2011 MAPLE [ seq(floor((n^3)/2), n=0..100) ]; MATHEMATICA A036487[n_]:=Floor[n^3/2] Floor[Range[0, 40]^3/2] (* or *) LinearRecurrence[{3, -2, -2, 3, -1}, {0, 0, 4, 13, 32}, 50] (* Harvey P. Dale, Jun 24 2018 *) PROG (Sage) [floor(n^3/2) for n in range(0, 41)] # Zerinvary Lajos, Dec 02 2009 (PARI) a(n)=n^3\2 \\ Charles R Greathouse IV, Jul 18 2014 CROSSREFS Cf. A033430 (bisection), A268201 (bisection). Sequence in context: A226839 A270976 A272510 * A184632 A212747 A011936 Adjacent sequences:  A036484 A036485 A036486 * A036488 A036489 A036490 KEYWORD nonn,easy AUTHOR EXTENSIONS Corrupted b-file corrected by Michael De Vlieger, Jul 18 2014 STATUS approved

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Last modified December 2 03:22 EST 2020. Contains 338865 sequences. (Running on oeis4.)