The first four terms of the sequence are doubled, then those numbers are tripled and then those numbers are quadrupled, etc.
A115425
The first four terms of the sequence are doubled, then those numbers are tripled and then those numbers are quadrupled, etc.
Terms
- a(0) =2a(1) =4a(2) =6a(3) =8a(4) =4a(5) =8a(6) =12a(7) =16a(8) =12a(9) =24a(10) =36a(11) =48a(12) =48a(13) =96a(14) =144a(15) =192a(16) =240a(17) =480a(18) =720a(19) =960a(20) =1440a(21) =2880a(22) =4320a(23) =5760a(24) =10080a(25) =20160a(26) =30240a(27) =40320a(28) =80640a(29) =161280
External references
- oeis: A115425