1,2

When (as at n=105) coefficients are not equal to 1 or -1, terms in C[n,x] are counted with multiplicity.

Table of n, a(n) for n=1..59.

n satisfying A051664(n) - A006530(n) > 0.

n=21: Cyclotomic[21,x] = 1 - x + x^3 - x^4 + x^6 - x^8 + x^9 - x^11 + x^12 has 9 terms while the largest prime factor of 21 is 7; 9 > 7, so 21 is in the sequence.

Cf. A006530, A051664, A070776.

Sequence in context: A026048 A195527 A047200 * A285800 A184041 A070005

Adjacent sequences: A070534 A070535 A070536 * A070538 A070539 A070540

nonn

Labos Elemer, May 03 2002

approved