%I #36 Mar 16 2021 04:30:36
%S 1,3,22,44,355,710,1065,1420,1775,2130,2485,2840,3195,312689,1146408,
%T 5419351,10838702,6167950454,21053343141,42106686282,63160029423,
%U 84213372564,105266715705,8958937768937,17917875537874,428224593349304,856449186698608,6134899525417045
%N Integers k with abs(sin(k)) < 1/k.
%C The values > 1 appear to be a subset of the numerators of continued fractions of Pi (A002485) (and/or Pi/2: A096456) and their multiples. Is it possible to find a term k here but not in |A332095| (k |tan k| < 1)? - _M. F. Hasler_, Oct 09 2020
%t Select[Range[3200], Abs[Sin[#]] < 1/# &] (* _Amiram Eldar_, Aug 25 2020 *)
%o (Python)
%o import numpy as np
%o for x in range(1, 10**9):
%o if np.abs(np.sin(x)) < 1/x:
%o print(x, end=", ")
%o (PARI) print1(1);apply( n-> forstep(n=n,oo,n,abs(sin(n))<1/n||return; print1(","n)), contfracpnqn(c=contfrac(Pi),#c)[1,]); \\ _M. F. Hasler_, Oct 09 2020
%Y Cf. A092328, A332095, A046965, A088306, A337249, A332095.
%K nonn
%O 1,2
%A _Anian Brosig_, Aug 25 2020
%E More terms from _M. F. Hasler_, Oct 09 2020
|