A115830 Sequence A115829 in binary.

0, 11, 110, 1100, 11000, 110000, 1100000, 11000000, 11000011, 110000000, 110000011, 110000110, 1100000000, 1100000011, 1100000110, 1100001100, 11000000000, 11000000011, 11000000110, 11000001100, 11000011000, 101110100011, 110000000000, 110000000011, 110000000110

Offset

0,2

Comments

Differs from A115806 for the first time at n = 21, where A115806(21) = 110000000000 while a(21) = 101110100011.

Links

Table of n, a(n) for n=0..24.

Formula

a(n) = A007088(A115829(n)).

Mathematica

Map[FromDigits[IntegerDigits[#, 2]] &, Select[Range[0, 20000], BitXor[10*#, 11*#] == 21*# &]] (* Paolo Xausa, Sep 29 2024 *)

Crossrefs

Cf. A007088, A115806, A115829.

Sequence in context: A163955 A164590 A115806 * A164780 A165264 A165796

Adjacent sequences: A115827 A115828 A115829 * A115831 A115832 A115833

Keyword

nonn,base

Author

Antti Karttunen, Feb 01 2006

Status

approved