G.f.: Product_{m>=1} 1/(1-x^m)^A018819(m).

Terms

a(0) =1a(1) =1a(2) =3a(3) =5a(4) =12a(5) =20a(6) =41a(7) =69a(8) =132a(9) =222a(10) =399a(11) =665a(12) =1156a(13) =1904a(14) =3212a(15) =5234a(16) =8645a(17) =13925a(18) =22596a(19) =36008a(20) =57590a(21) =90862a(22) =143508a(23) =224316a(24) =350505a(25) =543159a(26) =840623a(27) =1292317a(28) =1983094a(29) =3026178