A300890 Lexicographically earliest sequence of distinct positive terms such that, for any n > 0, 2*a(n) + a(n+1) is a Fibbinary number (A003714).

1, 2, 4, 8, 5, 6, 9, 3, 10, 12, 13, 7, 18, 28, 16, 32, 17, 30, 14, 36, 56, 20, 24, 21, 22, 25, 15, 11, 19, 26, 29, 23, 27, 31, 66, 33, 62, 37, 54, 38, 52, 34, 60, 40, 48, 41, 46, 44, 42, 45, 39, 50, 49, 35, 58, 53, 43, 47, 51, 59, 138, 61, 134, 57, 55, 146

Offset

1,2

Comments

The scatterplot of the sequence has fractal features.

Links

Rémy Sigrist, Table of n, a(n) for n = 1..10000

Rémy Sigrist, Scatterplot of the first 250000 terms

Rémy Sigrist, C++ program for A300890

Prog

(C++) See Links section.

Crossrefs

Cf. A003714.

Sequence in context: A146079 A165669 A227818 * A021893 A036117 A307357

Adjacent sequences: A300887 A300888 A300889 * A300891 A300892 A300893

Keyword

nonn,base,look

Author

Rémy Sigrist, Mar 14 2018

Status

approved