OFFSET
0,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..3000
Index entries for linear recurrences with constant coefficients, signature (3,-3,1).
FORMULA
a(n) = (A016957(n))^2. - Zerinvary Lajos, Jun 30 2009
Sum_{n>=0} 1/a(n) = A086730. - Amiram Eldar, Nov 17 2020
MATHEMATICA
Table[(6*n + 4)^2, {n, 0, 30}] (* Amiram Eldar, Nov 17 2020 *)
PROG
(Magma) [(6*n+4)^2: n in [0..50]]; // Vincenzo Librandi, May 06 2011
(PARI) a(n)=(6*n+4)^2 \\ Charles R Greathouse IV, Jun 17 2017
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
EXTENSIONS
Notation in formula cleaned up by R. J. Mathar, Aug 05 2010
STATUS
approved