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 A274095 Nearest integer to n*sin(sqrt(n)). 12
 0, 1, 2, 3, 4, 4, 4, 3, 2, 1, 0, -2, -4, -6, -8, -10, -12, -14, -16, -18, -19, -21, -22, -23, -24, -24, -24, -24, -23, -23, -22, -20, -19, -17, -15, -13, -10, -7, -5, -1, 2, 5, 8, 12, 15, 19, 22, 25, 29, 32, 35, 39, 42, 45, 47, 50, 52, 54, 56, 58, 60, 61, 62, 63, 63, 64, 64, 63, 63, 62, 61, 60, 58, 56 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Chai Wah Wu, Table of n, a(n) for n = 0..10000 MAPLE Digits:=50; ft:=proc(n, t) local k, j; j:=(n mod t); k:=(n-j)/t; round(evalf(k*sin(sqrt(k)+j*Pi/2))); end; [seq(ft(n, 1), n=0..120)]; PROG (Python) from sympy import sin, sqrt, pi def A274095(n, t = 1):     k, j = divmod(n, t)     return int((k*sin(sqrt(k)+j*pi/2)).round()) A274095_list = [A274095(n, 1) for n in range(10001)] # Chai Wah Wu, Jun 11 2016 CROSSREFS Sequences of the same type: A272695, A274086, A274087, A274088, A274090, A274091, A274092, A274095, A274096, A274097, A274101, A274102. Sequence in context: A286551 A290097 A241283 * A263408 A109870 A171502 Adjacent sequences:  A274092 A274093 A274094 * A274096 A274097 A274098 KEYWORD sign,look AUTHOR N. J. A. Sloane, Jun 11 2016 STATUS approved

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Last modified October 22 15:57 EDT 2019. Contains 328318 sequences. (Running on oeis4.)