OFFSET
0,5
LINKS
N. J. A. Sloane and Chai Wah Wu, Table of n, a(n) for n = 0..10000 n = 0..1000 from N. J. A. Sloane.
MAPLE
PROG
(Python)
from sympy import sin, sqrt, pi
def f(n, t = 1):
k, j = divmod(n, t)
return int((k**2*sin(sqrt(k)+j*pi/2)).round())
A274091_list = [f(n, 2) for n in range(10001)] # Chai Wah Wu, Jun 11 2016
CROSSREFS
KEYWORD
sign
AUTHOR
N. J. A. Sloane, Jun 10 2016
STATUS
approved