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 A112930 a(n) = order of n-th term of A112926 among squarefree integers. 6

%I

%S 3,4,5,7,9,10,13,14,17,19,21,25,28,30,32,34,38,39,43,46,47,51,53,57,

%T 62,63,65,68,69,72,79,82,85,87,93,94,97,101,104,106,110,111,118,119,

%U 122,123,131,140,142,143,146,150,151,155,159,163,167,168,171,173

%N a(n) = order of n-th term of A112926 among squarefree integers.

%H Michael De Vlieger and Diana Mecum, <a href="/A112930/b112930.txt">Table of n, a(n) for n = 1..10000</a> (first 450 terms from Diana Mecum)

%e The 5th term of A112926 is 13 and 13 is the 9th squarefree integer (with 1 counted as the first squarefree integer). So a(5) = 9.

%t With[{k = 120, s = Select[Range[10^4], SquareFreeQ]}, Flatten@ Array[Position[s, SelectFirst[Range[Prime@ # + 1, Prime@ # + k], SquareFreeQ]] &, 60]] (* _Michael De Vlieger_, Aug 16 2017 *)

%Y Cf. A061400, A112925, A112926, A112928, A112929.

%K nonn

%O 1,1

%A _Leroy Quet_, Oct 06 2005

%E More terms from _Diana L. Mecum_, Jun 13 2007

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Last modified May 13 05:02 EDT 2021. Contains 343836 sequences. (Running on oeis4.)