A340251 a(n) is the index of the bit that was inverted in A340250(n) to get A340250(n+1).

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

Offset

0,4

Links

Rémy Sigrist, Table of n, a(n) for n = 0..8191

Rémy Sigrist, Colored scatterplot of the ordinal transform of the first 2^16 terms (where the color is function of a(n))

Rémy Sigrist, PARI program for A340251

Formula

A340250(n+1) = A340250(n) XOR 2^a(n) (where XOR denotes the bitwise XOR operator).

Prog

(PARI) \\ See Links section.

Crossrefs

Cf. A340250.

Sequence in context: A341524 A175804 A241063 * A286957 A195017 A078806

Adjacent sequences: A340248 A340249 A340250 * A340252 A340253 A340254

Keyword

nonn,base

Author

Rémy Sigrist, Jan 02 2021

Status

approved