a(n) = A006190(n) * A006190(n+2).
A138365
a(n) = A006190(n) * A006190(n+2).
Terms
- a(0) =10a(1) =99a(2) =1090a(3) =11880a(4) =129601a(5) =1413720a(6) =15421330a(7) =168220899a(8) =1835008570a(9) =20016873360a(10) =218350598401
External references
- oeis: A138365