a(n) = smallest possible (product of b(k)'s + product of c(k)'s), where the positive integers <= n are partitioned somehow into {b(k)} and {c(k)}.

A127180

a(n) = smallest possible (product of b(k)'s + product of c(k)'s), where the positive integers <= n are partitioned somehow into {b(k)} and {c(k)}.

Terms

    a(0) =2a(1) =2a(2) =3a(3) =5a(4) =10a(5) =22a(6) =54a(7) =142a(8) =402a(9) =1206a(10) =3810a(11) =12636a(12) =43776a(13) =157824a(14) =590520a(15) =2287080a(16) =9148320a(17) =37719360a(18) =160029696a(19) =697553280a(20) =3119552640a(21) =14295585696a(22) =67052240640a(23) =321571257120

External references