A279209 Length of first run of 0's in binary expansion of n.

1, 0, 1, 0, 2, 1, 1, 0, 3, 2, 1, 1, 2, 1, 1, 0, 4, 3, 2, 2, 1, 1, 1, 1, 3, 2, 1, 1, 2, 1, 1, 0, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 4, 3, 2, 2, 1, 1, 1, 1, 3, 2, 1, 1, 2, 1, 1, 0, 6, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1

Offset: 0

Author

N. J. A. Sloane, Dec 22 2016

Keywords

• nonn
• base

Examples

			4 = 100_2 so a(4) = 2.
		

Links

• Vincenzo Librandi, Table of n, a(n) for n = 0..10000

Crossrefs

Cf. A090996, A279210.

Programs

Mathematica

Table[First[Map[Length, DeleteCases[Split@IntegerDigits[n, 2], w_/;Times@@w>0]]/.{}->{0}], {n, 0, 200}] (* Vincenzo Librandi, Dec 23 2016 *) (* after Michael De Vlieger *)