1,2

Table of n, a(n) for n=1..36.

Samuel S. Wagstaff, Jr., On k-free sequences of integers, Math. Comp., 26 (1972), 767-771.

a(8)=10 because of the unique solution 1 2 3 5 6 8 9 10.

This sequence is to A003003 as A065825 is to A003002.

Sequence in context: A167389 A087067 A166018 * A238896 A190842 A273106

Adjacent sequences: A225742 A225743 A225744 * A225746 A225747 A225748

nonn,more

Don Knuth, Aug 05 2013

approved