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A161440
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Numbers m such that A160700(m) = 0.
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17
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0, 17, 34, 51, 68, 85, 102, 119, 136, 153, 170, 187, 204, 221, 238, 255, 257, 272, 291, 306, 325, 340, 359, 374, 393, 408, 427, 442, 461, 476, 495, 510, 514, 531, 544, 561, 582, 599, 612, 629, 650, 667, 680, 697, 718, 735, 748, 765, 771, 786, 801, 816, 839
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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. A161441, 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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