Least k such that the k-th squarefree number has binary expansion of length n. Index of the smallest squarefree number >= 2^n.
A372540
Least k such that the k-th squarefree number has binary expansion of length n. Index of the smallest squarefree number >= 2^n.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =7a(4) =12a(5) =21a(6) =40a(7) =79a(8) =158a(9) =315a(10) =625a(11) =1246a(12) =2492a(13) =4983a(14) =9963a(15) =19921a(16) =39845a(17) =79689a(18) =159361a(19) =318726a(20) =637462a(21) =1274919a(22) =2549835a(23) =5099651a(24) =10199302a(25) =20398665a(26) =40797328a(27) =81594627a(28) =163189198a(29) =326378285
External references
- oeis: A372540