1,1

a(n) = k where R(k+9)=7.

R(a(n))=A086940(n).

Sequence in context: A092571 A119597 A132388 this_sequence A142365 A093473 A000506

Adjacent sequences: A086942 A086943 A086944 this_sequence A086946 A086947 A086948

nonn

Ray Chandler (rayjchandler(AT)sbcglobal.net), Jul 24 2003