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A105081
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a(n) = 1 + A003188(n - 1), n>=1.
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1
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1, 2, 4, 3, 7, 8, 6, 5, 13, 14, 16, 15, 11, 12, 10, 9, 25, 26, 28, 27, 31, 32, 30, 29, 21, 22, 24, 23, 19, 20, 18, 17, 49, 50, 52, 51, 55, 56, 54, 53, 61, 62, 64, 63, 59, 60, 58, 57, 41, 42, 44, 43, 47, 48, 46, 45, 37, 38, 40, 39, 35, 36, 34, 33, 97, 98, 100, 99, 103, 104, 102
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| A permutation of the natural numbers.
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FORMULA
| a(1) = 1, a(2^k + j) = 2^k + a(2^k - j + 1) for 1<=j<= 2^k.
A000069(a(n)) = A065621(n).
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MATHEMATICA
| Nest[Join[#, Length[#]+Reverse[#]]&, {1}, 7] (* From Vladimir Joseph Stephan Orlovsky, Feb 01 2012 *)
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CROSSREFS
| Cf. A000069, A003188, A065621.
Sequence in context: A191738 A114537 A021808 * A026167 A127002 A027634
Adjacent sequences: A105078 A105079 A105080 * A105082 A105083 A105084
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KEYWORD
| nonn,easy,changed
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AUTHOR
| Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Apr 28 2005
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