a(0)=0, a(1)=2 then a(n) = a(n-2) + 2*sqrt(8*a(n-1)^2 + 8*a(n-1) + 1).
A053141
a(0)=0, a(1)=2 then a(n) = a(n-2) + 2*sqrt(8*a(n-1)^2 + 8*a(n-1) + 1).
Terms
- a(0) =0a(1) =2a(2) =14a(3) =84a(4) =492a(5) =2870a(6) =16730a(7) =97512a(8) =568344a(9) =3312554a(10) =19306982a(11) =112529340a(12) =655869060a(13) =3822685022a(14) =22280241074a(15) =129858761424a(16) =756872327472
External references
- oeis: A053141