A090330 Number of divisors >1 of n that are prefixes of other divisors of n in binary representation.

0, 0, 0, 1, 0, 1, 0, 2, 0, 2, 0, 3, 0, 1, 1, 3, 0, 3, 0, 3, 1, 2, 0, 5, 0, 1, 1, 3, 0, 4, 0, 4, 0, 2, 0, 6, 0, 2, 1, 5, 0, 4, 0, 3, 2, 2, 0, 7, 0, 3, 1, 3, 0, 5, 1, 5, 1, 1, 0, 7, 0, 1, 2, 5, 0, 4, 0, 4, 0, 4, 0, 8, 0, 2, 1, 4, 0, 5, 0, 7, 1, 2, 0, 7, 1, 2, 1, 5, 0, 6, 0, 3, 1, 2, 1, 9, 0, 2, 1, 5, 0, 5

Offset

1,8

Comments

a(n) = A090329(n) - 1.

Links

Table of n, a(n) for n=1..102.

Crossrefs

Cf. A090332, A090334, A090331.

Sequence in context: A171700 A162660 A324848 * A332447 A132747 A301979

Adjacent sequences: A090327 A090328 A090329 * A090331 A090332 A090333

Keyword

nonn

Author

Reinhard Zumkeller, Nov 26 2003

Status

approved