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A373864
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Reduced Collatz function R applied to the numbers 6n+5: a(n) = R(6n+5), where R(k) = (3k+1)/2^r, with r as large as possible.
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0
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1, 17, 13, 35, 11, 53, 31, 71, 5, 89, 49, 107, 29, 125, 67, 143, 19, 161, 85, 179, 47, 197, 103, 215, 7, 233, 121, 251, 65, 269, 139, 287, 37, 305, 157, 323, 83, 341, 175, 359, 23, 377, 193, 395, 101, 413, 211, 431, 55, 449, 229, 467, 119
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OFFSET
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0,2
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LINKS
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FORMULA
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MATHEMATICA
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A373864[n_] := #/2^IntegerExponent[#, 2] & [9*n + 8];
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PROG
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(PARI) a(n) = n=9*n+8; n>>valuation(n, 2);
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CROSSREFS
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KEYWORD
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nonn,easy,changed
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AUTHOR
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STATUS
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approved
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