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

1,1

Links

Table of n, a(n) for n=1..58.

Example

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.

Sequence in context: A109804 A231672 A375750 * A194458 A083266 A334130

Adjacent sequences: A120990 A120991 A120992 * A120994 A120995 A120996

Keyword

nonn

Author

Leroy Quet, Jul 21 2006

Extensions

More terms from Don Reble, Aug 01 2006

Status

approved