A258202 - OEIS

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.

121, 143, 476, 498, 831, 853, 1076, 1186, 1208, 1541, 1563, 1786, 1896, 1918, 2251, 2273, 2606, 2628, 2961, 2983, 3316, 3338, 3561, 3671, 3693, 4026, 4048, 4381, 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

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OFFSET

1,1

COMMENTS

Numbers n for which A258021(n) > 0 and A258201(n) < 0.

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..10000

PROG

(Scheme, with Antti Karttunen's IntSeq-library)

(define A258202 (MATCHING-POS 1 1 (lambda (n) (and (> (A258021 n) 0) (< (A258201 n) 0)))))

CROSSREFS

Complement of A258203 in A258024.