(n+1)^2*a(n+1) = (9n^2+9n+3)*a(n) - 27*n^2*a(n-1), with a(0) = 1 and a(1) = 3.
A006077
(n+1)^2*a(n+1) = (9n^2+9n+3)*a(n) - 27*n^2*a(n-1), with a(0) = 1 and a(1) = 3.
Terms
- a(0) =1a(1) =3a(2) =9a(3) =21a(4) =9a(5) =-297a(6) =-2421a(7) =-12933a(8) =-52407a(9) =-145293a(10) =-35091a(11) =2954097a(12) =25228971a(13) =142080669a(14) =602217261a(15) =1724917221a(16) =283305033a(17) =-38852066421a(18) =-337425235479
External references
- oeis: A006077