A067535 Smallest squarefree number >= n.

1, 2, 3, 5, 5, 6, 7, 10, 10, 10, 11, 13, 13, 14, 15, 17, 17, 19, 19, 21, 21, 22, 23, 26, 26, 26, 29, 29, 29, 30, 31, 33, 33, 34, 35, 37, 37, 38, 39, 41, 41, 42, 43, 46, 46, 46, 47, 51, 51, 51, 51, 53, 53, 55, 55, 57, 57, 58, 59, 61, 61, 62

Offset

1,2

Links

Michael De Vlieger, Table of n, a(n) for n = 1..10000

Eric Weisstein's World of Mathematics, Squarefree.

Formula

a(n) = n + A081221(n). - Amiram Eldar, Oct 10 2023

Mathematica

Table[k = n; While[! SquareFreeQ@ k, k++]; k, {n, 62}] (* Michael De Vlieger, Mar 18 2017 *)

Prog

(PARI) a(n) = while (! issquarefree(n), n++); n; \\ Michel Marcus, Mar 18 2017

Crossrefs

Cf. A005117, A070321, A076260, A081221.

Sequence in context: A078903 A296206 A079228 * A076752 A079114 A058189

Adjacent sequences: A067532 A067533 A067534 * A067536 A067537 A067538

Keyword

nonn

Author

Reinhard Zumkeller, Jan 27 2002

Status

approved