The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A246414 Positive integers k satisfying csc(k) < csc(k+1) > csc(k+2). 3
 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108, 111, 113, 115, 117, 119, 121, 123, 125, 127, 129 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS A246413, a(n), and A246415 partition the positive integers. LINKS Clark Kimberling, Table of n, a(n) for n = 1..1000 MATHEMATICA z = 200; f[x_] := f[x] = Csc[x]; Select[Range[1, z], f[#] > f[# + 1] &] (*A246413*) Select[Range[1, z], f[#] < f[# + 1] > f[# + 2] &] (*A246414 *) Select[Range[1, z], f[#] < f[# + 1] < f[# + 2] > f[# + 3] &] (*A246415*) Position[Partition[Csc[Range[200]], 3, 1], _?(#[[1]]<#[[2]]>#[[3]]&), 1, Heads->False]//Flatten (* Harvey P. Dale, May 05 2023 *) CROSSREFS Cf. A246413, A246415. Sequence in context: A373787 A059534 A137804 * A054965 A059548 A064720 Adjacent sequences: A246411 A246412 A246413 * A246415 A246416 A246417 KEYWORD nonn,easy AUTHOR Clark Kimberling, Aug 25 2014 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified August 11 01:05 EDT 2024. Contains 375059 sequences. (Running on oeis4.)