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A120993
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a(n) is the integer in the n-th run of squarefree integers which is divisible by the number of integers in that run.
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1
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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
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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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.
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CROSSREFS
| Cf. A120992.
Sequence in context: A130484 A074374 A109804 * A194458 A083266 A054731
Adjacent sequences: A120990 A120991 A120992 * A120994 A120995 A120996
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KEYWORD
| nonn
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AUTHOR
| Leroy Quet Jul 21 2006
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EXTENSIONS
| More terms from Don Reble (djr(AT)nk.ca), Aug 01 2006
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