1,1

Cf. A006882 (double factorials), A076208, A076210, A076211.

Sequence in context: A051143 A084853 A115337 this_sequence A037399 A086130 A024636

Adjacent sequences: A076206 A076207 A076208 this_sequence A076210 A076211 A076212

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