1,2

a(n) = A162798(n+1)/2.

Cf. A139250, A139251, A160160, A160161, A162798.

Sequence in context: A032600 A103260 A060824 this_sequence A064849 A132189 A034585

Adjacent sequences: A162796 A162797 A162798 this_sequence A162800 A162801 A162802

more,nonn

Omar E. Pol (info(AT)polprimos.com), Jul 28 2009