A285344 (A285342)/2.

1, 3, 4, 6, 8, 10, 11, 13, 14, 16, 18, 20, 21, 23, 25, 27, 28, 30, 32, 34, 35, 37, 38, 40, 42, 44, 45, 47, 48, 50, 52, 54, 55, 57, 59, 61, 62, 64, 66, 68, 69, 71, 72, 74, 76, 78, 79, 81, 83, 85, 86, 88, 90, 92, 93, 95, 96, 98, 100, 102, 103, 105, 107, 109

Offset: 1

Author

Clark Kimberling, Apr 25 2017

Keywords

• nonn
• easy

Links

• Clark Kimberling, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A284341, A285342, A285343.

Programs

Mathematica

s = Nest[Flatten[# /. {0 -> {1, 0}, 1 -> {1, 0, 1, 1}}] &, {0}, 10] (* A285341 *)
u = Flatten[Position[s, 0]]  (* A285342 *)
Flatten[Position[s, 1]]  (* A285343 *)
u/2 (* A285344)