1,1

E.g. 31=30+1=21+10, 30=210=primorial number

Cf. A002110.

Sequence in context: A075936 A103069 A141877 this_sequence A142177 A063397 A044282

Adjacent sequences: A057227 A057228 A057229 this_sequence A057231 A057232 A057233

nonn

Naohiro Nomoto (6284968128(AT)geocities.co.jp), Sep 19 2000