A110444 Binary expansion of A074988.

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

Offset

1,2

Links

Table of n, a(n) for n=1..18.

Formula

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

Example

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.

Crossrefs

Sequence in context: A266790 A266592 A267209 * A265380 A114397 A336325

Adjacent sequences: A110441 A110442 A110443 * A110445 A110446 A110447

Keyword

easy,nonn

Author

Paul Barry, Jul 20 2005

Status

approved