0,3

Diagonal sums of A105586.

Table of n, a(n) for n=0..77.

a(n)=sum{k=0..floor(n/2), binomial(abs(mu(n-k)), abs(mu(k))}

Sequence in context: A134544 A230514 A106161 * A064658 A194292 A308403

Adjacent sequences: A105585 A105586 A105587 * A105589 A105590 A105591

easy,nonn

Paul Barry, Apr 14 2005

approved