A110444 Binary expansion of A074988.

1, 11, 111, 1110, 11101, 111011, 1110111, 11101110, 111011100, 1110111001, 11101110011, 111011100110, 1110111001101, 11101110011011, 111011100110111, 1110111001101110, 11101110011011101, 111011100110111010

Offset: 1

Author

Paul Barry, Jul 20 2005

Keywords

• easy
• nonn

Examples

			a(6)=111011 since mu(1)^2,mu(2)^2,mu(3)^2,mu(4)^2,mu(5)^2,mu(6)^2=1,1,1,0,1,1.
		

Formula

a(n)=sum{k=0..n, abs(mu(n-k+1))*10^k}