1,1

Cf. A006882 (double factorials), A076208, A076209, A076211.

Sequence in context: A089085 A033163 A039869 this_sequence A039014 A102989 A005623

Adjacent sequences: A076207 A076208 A076209 this_sequence A076211 A076212 A076213

nonn

Zak Seidov (zakseidov(AT)yahoo.com), Nov 02 2002

More terms (checked n<5000) from Hugo Pfoertner (hugo(AT)pfoertner.org), Jun 22 2003