cp's OEIS Frontend

A258202 Natural numbers n that have the property that starting from k = n, the fixed point of the map k -> floor(tan(k)) is strictly positive, while the smallest number encountered during the iteration is strictly negative.

%I A258202 #10 Jun 05 2015 03:56:25
%S A258202 121,143,476,498,831,853,1076,1186,1208,1541,1563,1786,1896,1918,2251,
%T A258202 2273,2606,2628,2961,2983,3316,3338,3561,3671,3693,4026,4048,4381,
%U A258202 4403,4736,4758,5091,5113,5336,5446,5468,5801,5823,6156,6178,6511,6533,6866,6888,7221,7243,7576,7598,7821,7931,7953,8286,8308,8641,8663,8996,9018
%N A258202 Natural numbers n that have the property that starting from k = n, the fixed point of the map k -> floor(tan(k)) is strictly positive, while the smallest number encountered during the iteration is strictly negative.
%C A258202 Numbers n for which A258021(n) > 0 and A258201(n) < 0.
%H A258202 Antti Karttunen, <a href="/A258202/b258202.txt">Table of n, a(n) for n = 1..10000</a>
%o A258202 (Scheme, with _Antti Karttunen_'s IntSeq-library)
%o A258202 (define A258202 (MATCHING-POS 1 1 (lambda (n) (and (> (A258021 n) 0) (< (A258201 n) 0)))))
%Y A258202 Complement of A258203 in A258024.
%Y A258202 Cf. A258021, A258201.
%K A258202 nonn
%O A258202 1,1
%A A258202 _Antti Karttunen_, May 26 2015