a(n) is the least common multiple of {1, 5, 9, 13, 17, ..., 4n+1} (A016813).
A051539
a(n) is the least common multiple of {1, 5, 9, 13, 17, ..., 4n+1} (A016813).
Terms
- a(0) =1a(1) =5a(2) =45a(3) =585a(4) =9945a(5) =69615a(6) =348075a(7) =10094175a(8) =111035925a(9) =4108329225a(10) =168441498225a(11) =168441498225
External references
- oeis: A051539