A013887 a(n) = 18^(5*n + 2).

324, 612220032, 1156831381426176, 2185911559738696531968, 4130428534112329328517709824, 7804725584345565904628551916716032, 14747559712960682275277163588165279154176, 27866516911699690485530919446962290200798035968

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn

Links

• Vincenzo Librandi, Table of n, a(n) for n = 0..50
• Tanya Khovanova, Recursive Sequences
• Index entries for linear recurrences with constant coefficients, signature (1889568).

Crossrefs

Cf. A001027.

Programs

Magma

[18^(5*n+2): n in [0..10]]; // Vincenzo Librandi, May 27 2011

Formula

a(n) = 1889568*a(n-1), a(0)=324. - Vincenzo Librandi, May 27 2011