a(n) = a(n-1)*a(n-2) + 1 with a(0) = a(1) = 0.
A007660
a(n) = a(n-1)*a(n-2) + 1 with a(0) = a(1) = 0.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =1a(4) =2a(5) =3a(6) =7a(7) =22a(8) =155a(9) =3411a(10) =528706a(11) =1803416167
External references
- oeis: A007660
A007660
a(n) = a(n-1)*a(n-2) + 1 with a(0) = a(1) = 0.