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 A189203 Zero-one sequence based on the sequence n(n+1)(2n+1)/6: a(A000330(k))=a(k); a(v(k))=1-a(k), where v=complement(A000330) and a(1)=0. 3
 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1 LINKS MATHEMATICA u[n_] := n(n+1)/(2n+1)/6; (*A000330*) a[1] = 0; a[2]=1; h = 128; c = (u[#1] &) /@ Range[2h]; d = (Complement[Range[Max[#1]], #1] &)[c]; Table[a[d[[n]]] = 1 - a[n], {n, 1, h - 1}]; (*A189203*) Table[a[c[[n]]] = a[n], {n, 1, h}] (*A189203*) Flatten[Position[%, 0]] (*A189204*) Flatten[Position[%%, 1]] (*A189205*) CROSSREFS Cf. A188967, A189204, A189205. Sequence in context: A189014 A189017 A189132 * A296028 A165263 A108737 Adjacent sequences: A189200 A189201 A189202 * A189204 A189205 A189206 KEYWORD nonn AUTHOR Clark Kimberling, Apr 18 2011 STATUS approved

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Last modified March 21 17:39 EDT 2023. Contains 361408 sequences. (Running on oeis4.)