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 A189681 (A189676)/2; from a 3-way partition of the positive integers. 3
 2, 4, 7, 9, 12, 14, 17, 19, 21, 24, 26, 29, 31, 34, 36, 39, 41, 43, 46, 48, 51, 53, 56, 58, 61, 63, 65, 68, 70, 73, 75, 78, 80, 82, 85, 87, 90, 92, 95, 97, 100, 102, 104, 107, 109, 112, 114, 117, 119, 122, 124, 126, 129, 131, 134, 136, 139, 141, 144, 146, 148, 151, 153, 156, 158, 161, 163, 165, 168, 170, 173, 175, 178, 180, 183, 185, 187, 190, 192, 195, 197, 200, 202, 205 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Table of n, a(n) for n=1..84. 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, A189680, A189682. Sequence in context: A189939 A219637 A189470 * A329834 A059542 A190324 Adjacent sequences: A189678 A189679 A189680 * A189682 A189683 A189684 KEYWORD nonn AUTHOR Clark Kimberling, Apr 25 2011 STATUS approved

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Last modified July 24 20:07 EDT 2024. Contains 374585 sequences. (Running on oeis4.)