A120993 a(n) is the integer in the n-th run of squarefree integers which is divisible by the number of integers in that run.
3, 6, 10, 15, 17, 19, 21, 26, 30, 33, 39, 42, 46, 51, 53, 55, 57, 62, 66, 69, 74, 78, 82, 87, 89, 91, 93, 97, 102, 105, 111, 114, 118, 122, 127, 129, 134, 138, 141, 146, 149, 151, 154, 159, 161, 163, 165, 170, 174, 177, 183, 186, 190, 195, 197, 199, 201, 206
Offset: 1
Keywords
Examples
The runs of squarefree integers are: (1,2,3),(5,6,7),(10,11),(13,14,15),(17),(19),(21,22,23),... Since the 7th run has 3 terms, a(7) = 21, the multiple of 3.
Crossrefs
Cf. A120992.
Extensions
More terms from Don Reble, Aug 01 2006