a(n) = a(n-1)^2 + n, with a(0)=0.A098152a(n) = a(n-1)^2 + n, with a(0)=0.Terms a(0) =0a(1) =1a(2) =3a(3) =12a(4) =148a(5) =21909a(6) =480004287External referencesoeis: A098152