Positions of records in A220400.

Terms

a(0) =0a(1) =4a(2) =16a(3) =48a(4) =96a(5) =144a(6) =240a(7) =480a(8) =720a(9) =960a(10) =1440a(11) =2880a(12) =3360a(13) =5040a(14) =6720a(15) =10080a(16) =20160a(17) =30240a(18) =40320a(19) =60480a(20) =80640a(21) =100800a(22) =110880a(23) =181440a(24) =201600a(25) =221760a(26) =332640a(27) =443520a(28) =665280a(29) =887040