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 A278102 a(n) is the largest j such that A278101(n,k) strictly decreases for k=1..j. 5
 1, 2, 3, 2, 3, 4, 2, 4, 2, 3, 2, 3, 4, 2, 4, 2, 3, 2, 3, 4, 2, 5, 6, 5, 2, 2, 3, 2, 4, 4, 4, 2, 2, 3, 2, 3, 4, 4, 5, 2, 2, 2, 3, 5, 3, 5, 2, 2, 2, 3, 5, 2, 4, 4, 4, 2, 3, 4, 2, 4, 5, 4, 2, 3, 2, 2, 4, 5, 4, 3, 3, 2, 2, 3, 5, 4, 5, 2, 2, 2, 3, 2, 3, 4, 2, 2, 2, 3, 2, 3, 4, 6, 5, 2, 3, 2, 2, 4, 6, 6, 2, 3, 2 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Jason Kimberley, Table of n, a(n) for n = 1..10000 MATHEMATICA Map[Length@ TakeWhile[FoldList[Function[s, Boole[s < 0] #2][#2 - #1] &, #], # > 0 &] &, #] &@ Map[DeleteCases[#, 0] &, Table[Boole[SquareFreeQ@ k] k Floor[n/Sqrt@ k]^2, {n, 23}, {k, n^2}] ] // Flatten (* Michael De Vlieger, Nov 24 2016 *) PROG (Magma) A277647:=func; A278101_row:=func; A278102:=func; [A278102(n):n in[1..103]]; CROSSREFS This is the row length sequence for triangles A278103 and A278104. A278106 lists first occurrences in this sequence. Sequence in context: A076050 A130799 A243519 * A339500 A106383 A175794 Adjacent sequences:  A278099 A278100 A278101 * A278103 A278104 A278105 KEYWORD nonn,easy AUTHOR Jason Kimberley, Nov 15 2016 STATUS approved

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Last modified June 22 12:56 EDT 2021. Contains 345380 sequences. (Running on oeis4.)