**Squarefree part of n: a(n) = smallest positive number m such that n/m is a square.**

*1, 2, 3, 1, 5, 6, 7, 2, 1, 10, 11, 3, 13, 14, 15, 1, 17, 2, 19, 5, 21, 22, 23, 6, 1, 26, 3, 7*

*4 seqfan posts*

*Sat Aug 28 20:31:02 CEST 2010* [seqfan] Solvability of equation x^3+y^3+z^3=0 in integers of real and imaginary quadratic fields

*Sat Oct 10 22:10:23 CEST 2009* [seqfan] Re: A006451 = n such that n*(n+1)/2+1 is square?

*Sat Oct 10 17:46:36 CEST 2009* [seqfan] Re: A006451 = n such that n*(n+1)/2+1 is square?

*Sat Oct 10 13:54:07 CEST 2009* [seqfan] Re: A006451 = n such that n*(n+1)/2+1 is square?

Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword

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