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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. 1

%I #7 Oct 19 2017 03:15:03

%S 3,6,10,15,17,19,21,26,30,33,39,42,46,51,53,55,57,62,66,69,74,78,82,

%T 87,89,91,93,97,102,105,111,114,118,122,127,129,134,138,141,146,149,

%U 151,154,159,161,163,165,170,174,177,183,186,190,195,197,199,201,206

%N a(n) is the integer in the n-th run of squarefree integers which is divisible by the number of integers in that run.

%e The runs of squarefree integers are:

%e (1,2,3),(5,6,7),(10,11),(13,14,15),(17),(19),(21,22,23),...

%e Since the 7th run has 3 terms, a(7) = 21, the multiple of 3.

%Y Cf. A120992.

%K nonn

%O 1,1

%A _Leroy Quet_, Jul 21 2006

%E More terms from _Don Reble_, Aug 01 2006

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Last modified August 13 19:11 EDT 2024. Contains 375144 sequences. (Running on oeis4.)