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A246412 Positive integers k satisfying csc(k) > csc(k+1) > csc(k+2) < csc(k+3). 3
44, 88, 132, 199, 243, 287, 331, 377, 421, 465, 509, 532, 576, 620, 664, 710, 754, 798, 842, 909, 953, 997, 1041, 1087, 1131, 1175, 1219, 1242, 1286, 1330, 1374, 1420, 1464, 1508, 1552, 1619, 1663, 1707, 1751, 1797, 1841, 1885, 1929, 1952, 1996, 2040, 2084 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
A246410, A246411, and a(n) partition the positive integers.
LINKS
MATHEMATICA
z = 200; f[x_] := f[x] = Csc[x];
Select[Range[1, z], f[#] < f[# + 1] &] (*A246410*)
Select[Range[1, z], f[#] > f[# + 1] < f[# + 2] &] (*A246411*)
Select[Range[1, 10 z], f[#] > f[# + 1] > f[# + 2] < f[# + 3] &] (*A246412*)
CROSSREFS
Sequence in context: A118087 A335481 A345409 * A248365 A044182 A044563
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Aug 25 2014
STATUS
approved

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Last modified July 14 02:38 EDT 2024. Contains 374291 sequences. (Running on oeis4.)