1,1

(PARI) concatprbin(n) = { y=2; print1(10", "); forprime(x=3, n, y=eval(concat(Str(y), Str(x))); b=binary(y); ln=length(b); z=Str(b[1]); for(j=2, ln, z=concat(Str(z), Str(b[j])); ); print1(z, ", ") ) }

Sequence in context: A119037 A101305 A001098 this_sequence A138119 A138118 A091253

Adjacent sequences: A086161 A086162 A086163 this_sequence A086165 A086166 A086167

nonn,base

Cino Hilliard (hillcino368(AT)gmail.com), Sep 08 2003