A175055 a(n) = decimal equivalent of {A033015(n) written in binary, and each run of 0's reduced in length by one digit, and each run of 1's reduced in length by one digit}.

1, 3, 2, 7, 4, 6, 15, 8, 5, 12, 14, 31, 16, 9, 11, 24, 13, 28, 30, 63, 32, 17, 19, 10, 23, 48, 25, 27, 56, 29, 60, 62, 127, 64, 33, 35, 18, 39, 20, 22, 47, 96, 49, 51, 26, 55, 112, 57, 59, 120, 61, 124, 126, 255, 128, 65, 67, 34, 71, 36, 38, 79, 40, 21, 44, 46, 95, 192, 97, 99

Offset: 1

Author

Leroy Quet, Dec 08 2009

Keywords

• base
• nonn

Comments

This is a permutation of the positive integers. Sequence A175056 is its inverse permutation.

Links

• Michael De Vlieger, Table of n, a(n) for n = 1..10945

Crossrefs

Cf. A033015, A175056, A175057, A175058, A175059, A175060

Programs

Mathematica

FromDigits[Join @@ #, 2] & /@ Map[Drop[#, 1] &, Select[Array[Split@ IntegerDigits[#, 2] &, 905], Min[Length /@ #] > 1 &], {2}] (* Michael De Vlieger, Sep 03 2017 *)

Extensions

Extended by Ray Chandler, Dec 18 2009