A229483 Squarefree numbers whose indices are lucky numbers.

1, 3, 10, 13, 19, 22, 33, 38, 47, 53, 59, 69, 78, 82, 102, 107, 110, 115, 119, 129, 141, 151, 161, 173, 182, 187, 206, 210, 215, 218, 227, 246, 258, 265, 274, 278, 309, 314, 318, 327, 334, 346, 359, 367, 382, 389, 391, 397, 426, 429, 437, 446, 462, 465, 470

Offset

1,2

Comments

Originally arose as "Lucky numbers generated from squarefree numbers" under the hypothesis that Ulam's sieve (the one used to produce lucky numbers) ignores the values of the terms.

Links

Table of n, a(n) for n=1..55.

Formula

a(n) = A005117(A000959(n)). - Charles R Greathouse IV, Sep 16 2013

Crossrefs

Cf. A032605, A059987, A229205.

Sequence in context: A190776 A298418 A229205 * A235089 A022122 A042479

Adjacent sequences: A229480 A229481 A229482 * A229484 A229485 A229486

Keyword

nonn

Author

Charles R Greathouse IV and M. F. Hasler, Sep 24 2013

Status

approved