A071125 Least starting number initiating cubefree but nonsquarefree chain of consecutive integers with length n {j,j+1,...,j+n-1}; i.e., start of n consecutive numbers in A067259.

4, 44, 98, 844, 30923, 671346, 8870025

Offset: 1

Author

Labos Elemer, May 29 2002

Keywords

• nonn
• fini
• full

Comments

Sequence is complete: multiples of 8 are not cubefree. - Donovan Johnson, Apr 27 2008

Examples

			n = 671346 = 2*3*3*13*19*151;
n = 671347 = 17*17*23*101;
n = 671348 = 2*2*47*3571;
n = 671349 = 3*7*7*4567;
n = 671350 = 2*5*5*29*463;
n = 671351 = 53*53*239.
		

Crossrefs

Cf. A063528, A067259.

Formula

A051903(a(n) + j) = 2 for j = 0, 1, ..., (n-1).

Extensions

a(7) from Donovan Johnson, Apr 27 2008