OFFSET
0,1
COMMENTS
Equivalently, powers of 3 with final digit 3. - Muniru A Asiru, Feb 06 2019
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 (81).
FORMULA
MAPLE
seq(coeff(series(3/(1-81*x), x, n+1), x, n), n = 0 .. 15); # Muniru A Asiru, Feb 06 2019
MATHEMATICA
3^(1 + 4Range[0, 15]) (* Harvey P. Dale, Jan 31 2011 *)
NestList[81#&, 3, 20] (* Harvey P. Dale, Feb 26 2023 *)
PROG
(Magma) [3^(4*n+1): n in [0..20]]; // Vincenzo Librandi, Jun 27 2011
(Maxima) makelist(3^(4*n+1), n, 0, 20); /* Martin Ettl, Oct 21 2012 */
(GAP) List([0..15], n->3^(4*n+1)); # Muniru A Asiru, Feb 06 2019
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved