a(n+1) = Sum_{i=1..a(n)} floor(a(n)/i); a(1) = 2.
A223545
a(n+1) = Sum_{i=1..a(n)} floor(a(n)/i); a(1) = 2.
Terms
- a(0) =2a(1) =3a(2) =5a(3) =10a(4) =27a(5) =95a(6) =447a(7) =2795a(8) =22616a(9) =230244a(10) =2878355a(11) =43253538a(12) =767188892a(13) =15813815440a(14) =373816159742
External references
- oeis: A223545