A160900 a(n) = the smallest positive multiple of n that has exactly a prime number of (non-leading) 0's in its binary representation.

4, 4, 9, 4, 10, 12, 21, 8, 9, 10, 22, 12, 26, 28, 45, 32, 17, 18, 19, 20, 21, 22, 46, 24, 25, 26, 54, 28, 58, 60, 93, 32, 66, 68, 35, 72, 37, 38, 39, 80, 41, 42, 43, 44, 45, 46, 94, 96, 49, 50, 51, 52, 53, 54, 110, 56, 57, 58, 118, 60, 122, 124, 189, 128, 65, 66, 134, 68, 138

Offset

1,1

Links

Table of n, a(n) for n=1..69.

Crossrefs

Cf. A023416, A160899.

Sequence in context: A137617 A345732 A023405 * A035116 A088613 A351582

Adjacent sequences: A160897 A160898 A160899 * A160901 A160902 A160903

Keyword

base,nonn

Author

Leroy Quet, May 29 2009

Extensions

Extended by Ray Chandler, Jun 14 2009

Status

approved