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6, 12, 17, 22, 27, 32, 37, 42, 47, 52, 57, 62, 67, 72, 77, 82, 87, 92, 97, 102, 107, 112, 116, 121, 126, 131, 136, 141, 146, 151, 155, 160, 165, 170, 175, 180, 185, 190, 194, 199, 204, 209, 214, 219, 224, 228, 233, 238, 243, 248, 253, 258, 262, 267, 272, 277
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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z = 400; p[k_] := p[k] = Sum[1/Binomial[2 h, h], {h, 1, k}] ; r = 1/3 + 2 Pi/Sqrt[243];
N[Table[r - p[n], {n, 1, z/50}]]
f[n_] := f[n] = Select[Range[z], r - p[#] < 1/3^n &, 1]
u = Flatten[Table[f[n], {n, 1, z}]] (* A248148 *)
v = Flatten[Position[Differences[u], 0]] (* A248149 *)
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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