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A345671
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Inverse permutation to A344792.
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3
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1, 3, 6, 2, 13, 4, 12, 27, 8, 5, 25, 54, 7, 17, 10, 24, 51, 108, 55, 15, 34, 9, 21, 48, 50, 103, 216, 109, 111, 30, 16, 69, 18, 20, 43, 96, 49, 101, 206, 26, 433, 218, 110, 223, 60, 31, 33, 138, 35, 37, 40, 42, 87, 192, 97, 99, 202, 102, 413, 52, 432, 867, 436
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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COMMENTS
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This is a permutation of the natural numbers.
The apparent straight line commanding the top of the log/log graph (see Links) comprises coordinates of the form (A061419(k), floor(c * 2^(k-1))) where c is 1.6939... (A205083 read as a binary fraction).
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LINKS
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FORMULA
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EXAMPLE
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PROG
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(PARI) a(n) = my(ret=0, k=0, r); n<<=1; while(n>1, [n, r]=divrem(n<<1, 3); if(r!=1, if(r, ret+=1<<k); k++)); ret+1<<k; \\ Kevin Ryde, Jul 10 2021
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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