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A161441
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Numbers n such that A160700(n) = 1.
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18
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1, 16, 35, 50, 69, 84, 103, 118, 137, 152, 171, 186, 205, 220, 239, 254, 256, 273, 290, 307, 324, 341, 358, 375, 392, 409, 426, 443, 460, 477, 494, 511, 515, 530, 545, 560, 583, 598, 613, 628, 651, 666, 681, 696, 719, 734, 749, 764, 770, 787, 800, 817, 838
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OFFSET
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1,2
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LINKS
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FORMULA
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MATHEMATICA
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b[n_] := b[n] = If[n < 16, n, b[Floor[n/16]]~BitXor~Mod[n, 16]];
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PROG
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(PARI) A160700(n)=my(t=n%16); while(n>15, n>>=4; t=bitxor(t, n%16)); t
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CROSSREFS
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Cf. A161440, A161442, A161443, A161444, A161445, A161446, A161447, A161448, A161449, A161450, A161451, A161452, A161453, A161454, A161455.
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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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