1,1

Examples: 36= XXXVI, 2*36= 72= LXXII, 3*36=108=CVIII, 4*36=144= CXLIV

153= CLIII, 2*153=306=CCCVI, 3*153=459=CDLIX, 4*153=612= DCXII

Sequence in context: A003848 A039495 A034592 this_sequence A117511 A064244 A064500

Adjacent sequences: A160751 A160752 A160753 this_sequence A160755 A160756 A160757

nonn

Claudio L Meller (claudiomeller(AT)gmail.com), May 25 2009