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 A189682 (A189680)/2; from a 3-way partition of the positive integers. 3
 1, 3, 5, 6, 8, 10, 11, 13, 15, 16, 18, 20, 22, 23, 25, 27, 28, 30, 32, 33, 35, 37, 38, 40, 42, 44, 45, 47, 49, 50, 52, 54, 55, 57, 59, 60, 62, 64, 66, 67, 69, 71, 72, 74, 76, 77, 79, 81, 83, 84, 86, 88, 89, 91, 93, 94, 96, 98, 99, 101, 103, 105, 106, 108, 110, 111, 113, 115, 116, 118, 120, 121, 123, 125, 127, 128, 130, 132, 133, 135, 137, 138, 140, 142, 143 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS See A189676. LINKS Table of n, a(n) for n=1..85. MATHEMATICA r=Pi/2; s=ArcSin[3/5]; t=ArcSin[4/5]; a[n_] := n + Floor[n*s/r] + Floor[n*t/r]; b[n_] := n + Floor[n*r/s] + Floor[n*t/s]; c[n_] := n + Floor[n*r/t] + Floor[n*s/t]; Table[a[n], {n, 1, 120}] (*A005408*) Table[b[n], {n, 1, 120}] (*A189676*) Table[c[n], {n, 1, 120}] (*A189680*) Table[b[n]/2, {n, 1, 120}] (*A189681*) Table[c[n]/2, {n, 1, 120}] (*A189682*) CROSSREFS Cf. A189676, A189681. Sequence in context: A138235 A329833 A059541 * A003152 A325913 A283965 Adjacent sequences: A189679 A189680 A189681 * A189683 A189684 A189685 KEYWORD nonn AUTHOR Clark Kimberling, Apr 25 2011 STATUS approved

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Last modified August 7 20:39 EDT 2024. Contains 375017 sequences. (Running on oeis4.)