a(n) = the smallest positive multiple of n that has exactly n (nonleading) 0's in its binary representation.

A143116

a(n) = the smallest positive multiple of n that has exactly n (nonleading) 0's in its binary representation.

Terms

    a(0) =2a(1) =4a(2) =18a(3) =16a(4) =65a(5) =132a(6) =518a(7) =256a(8) =1026a(9) =2050a(10) =4224a(11) =8196a(12) =16640a(13) =65548a(14) =262155a(15) =65536a(16) =262208a(17) =524304a(18) =1050624a(19) =2097160a(20) =8388618a(21) =8388864a(22) =33554562a(23) =33554448a(24) =67174400a(25) =134218240a(26) =268435458a(27) =1073741844a(28) =1073807360a(29) =8589934620

External references