1,1
E.g. 31=30+1=21+10, 30=210=primorial number
Cf. A002110.
Sequence in context: A075936 A103069 A141877 * A142177 A063397 A044282
Adjacent sequences: A057227 A057228 A057229 * A057231 A057232 A057233
nonn
Naohiro Nomoto (6284968128(AT)geocities.co.jp), Sep 19 2000