|
| |
| |
|
|
|
3, 23, 203, 1823, 16403, 147623, 1328603, 11957423, 107616803, 968551223, 8716961003, 78452649023, 706073841203, 6354664570823, 57191981137403, 514727830236623, 4632550472129603, 41692954249166423, 375236588242497803
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,1
|
|
|
LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..1000
Index to sequences with linear recurrences with constant coefficients, signature (10,-9).
|
|
|
FORMULA
| a(n) = 9*a(n-1)-4 for n>0, a(0)=3.
O.g.f.: (1/(1-x)-5/(9*x-1))/2 . - R. J. Mathar, Feb 19 2008
a(n) = 10*a(n-1)-9*a(n-2). - Vincenzo Librandi, Nov 08 2011
|
|
|
PROG
| (MAGMA) [(5*9^n+1)/2: n in [0..30]]; // Vincenzo Librandi, Nov 08 2011
|
|
|
CROSSREFS
| Sequence in context: A060880 A093155 A096649 * A114017 A068691 A093135
Adjacent sequences: A135420 A135421 A135422 * A135424 A135425 A135426
|
|
|
KEYWORD
| nonn,easy
|
|
|
AUTHOR
| Paul Curtz (bpcrtz(AT)free.fr), Feb 18 2008
|
|
|
EXTENSIONS
| More terms from R. J. Mathar, Feb 19 2008
Definition rewritten (with Mathar's formula) from Bruno Berselli, Nov 08 2011
|
| |
|
|
