A071125 - OEIS

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

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OFFSET

1,1

COMMENTS

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

LINKS

Table of n, a(n) for n=1..7.

FORMULA

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

EXAMPLE

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.

Sequence in context: A284065 A063837 A344871 * A193448 A200456 A292454

Adjacent sequences: A071122 A071123 A071124 * A071126 A071127 A071128

KEYWORD

nonn,fini,full

AUTHOR

Labos Elemer, May 29 2002

EXTENSIONS

a(7) from Donovan Johnson, Apr 27 2008

STATUS

approved