a(n) = A173557(n) * A345001(n).

Terms

a(0) =-1a(1) =0a(2) =-2a(3) =3a(4) =-12a(5) =10a(6) =-30a(7) =11a(8) =2a(9) =20a(10) =-90a(11) =40a(12) =-132a(13) =30a(14) =16a(15) =31a(16) =-240a(17) =48a(18) =-306a(19) =104a(20) =0a(21) =50a(22) =-462a(23) =112a(24) =-36a(25) =60a(26) =26a(27) =192a(28) =-756a(29) =344