A364569 Length of the common prefix in the binary expansions of A156552(n) and n-1 [= A156552(A005940(n))].

0, 1, 2, 2, 3, 3, 1, 3, 1, 4, 2, 4, 1, 1, 1, 4, 5, 1, 3, 5, 2, 2, 2, 5, 4, 1, 2, 1, 1, 1, 1, 5, 4, 5, 2, 1, 3, 3, 3, 6, 2, 2, 2, 2, 5, 2, 2, 6, 5, 4, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 6, 4, 4, 5, 5, 4, 2, 4, 1, 3, 3, 1, 3, 2, 3, 3, 7, 1, 2, 2, 2, 2, 2, 2, 2, 2, 5, 2, 2, 2, 2, 2, 7, 1, 5, 1, 4, 1, 1, 1, 1, 1

Offset: 1

Author

Antti Karttunen, Aug 14 2023

Keywords

• nonn

Links

• Antti Karttunen, Table of n, a(n) for n = 1..65537

Crossrefs

Cf. A005940, A156552, A364570.

Cf. also A347380.

Programs

PARI

Abincompreflen(n, m) = { my(x=binary(n), y=binary(m), u=min(#x, #y)); for(i=1, u, if(x[i]!=y[i], return(i-1))); (u); };
A364569(n) = Abincompreflen(A156552(n), (n-1));