Location of records in A099564.

Terms

a(0) =1a(1) =4a(2) =18a(3) =24a(4) =150a(5) =180a(6) =210a(7) =1920a(8) =2160a(9) =2400a(10) =2640a(11) =2880a(12) =40560a(13) =43680a(14) =46800a(15) =49920a(16) =53040a(17) =56160a(18) =59280a(19) =62400a(20) =1375920a(21) =1441440a(22) =1506960a(23) =1572480a(24) =1638000a(25) =1703520a(26) =1769040a(27) =1834560a(28) =1900080a(29) =1965600