a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ...+ a(n-1)*a(1) for n >= 3, with initial terms 3,1.
A025230
a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ...+ a(n-1)*a(1) for n >= 3, with initial terms 3,1.
Terms
- a(0) =3a(1) =1a(2) =6a(3) =37a(4) =234a(5) =1514a(6) =9996a(7) =67181a(8) =458562a(9) =3172478a(10) =22206420a(11) =157027938a(12) =1120292388a(13) =8055001716a(14) =58314533400a(15) =424740506109
External references
- oeis: A025230