A013751 a(n) = 12^(3*n + 2).

144, 248832, 429981696, 743008370688, 1283918464548864, 2218611106740436992, 3833759992447475122176, 6624737266949237011120128, 11447545997288281555215581184

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• easy

Links

• Vincenzo Librandi, Table of n, a(n) for n = 0..200
• Tanya Khovanova, Recursive Sequences
• Index entries for linear recurrences with constant coefficients, signature (1728).

Crossrefs

Subsequence of A001021.

Programs

Magma

[12^(3*n+2): n in [0..15]]; // Vincenzo Librandi, Jun 27 2011

PARI

a(n)=12^(3*n+2) \\ Charles R Greathouse IV, Jun 27 2011

Formula

From Philippe Deléham, Nov 30 2008: (Start)

a(n) = 1728*a(n-1); a(0)=144.

G.f.: 144/(1-1728*x).

a(n) = 12*A013750(n). (End)