Positions of records in A266342.

Terms

a(0) =1a(1) =120a(2) =1980a(3) =7920a(4) =30240a(5) =109200a(6) =120120a(7) =480480a(8) =491400a(9) =1853280a(10) =1884960a(11) =1965600a(12) =2106720a(13) =7207200a(14) =8168160a(15) =8482320a(16) =8648640a(17) =31600800a(18) =121080960a(19) =122522400a(20) =129729600a(21) =136936800a(22) =465585120a(23) =490089600a(24) =497296800a(25) =514594080a(26) =537213600a(27) =551350800