|
| |
|
|
A153509
|
|
Period 9: repeat 6,6,6,3,3,3,0,0,0.
|
|
0
| |
|
|
6, 6, 6, 3, 3, 3, 0, 0, 0, 6, 6, 6, 3, 3, 3, 0, 0, 0, 6, 6, 6, 3, 3, 3, 0, 0, 0, 6, 6, 6, 3, 3, 3, 0, 0, 0, 6, 6, 6, 3, 3, 3, 0, 0, 0, 6, 6, 6, 3, 3, 3, 0, 0, 0, 6, 6, 6, 3, 3, 3, 0, 0, 0, 6, 6, 6, 3, 3, 3, 0, 0, 0, 6, 6, 6, 3, 3, 3, 0, 0, 0, 6, 6, 6, 3, 3, 3, 0, 0, 0, 6, 6, 6, 3, 3, 3, 0, 0, 0, 6, 6, 6, 3, 3, 3
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,1
|
|
|
FORMULA
| a(n)=(1/12)*{-7*(n mod 9)+[(n+1) mod 9]+[(n+2) mod 9]+5*[(n+3) mod 9]+[(n+4) mod 9]+[(n+5) mod 9]+5*[(n+6) mod 9]+[(n+7) mod 9]+[(n+8) mod 9]}, with n>=0 [From Paolo P. Lava (paoloplava(AT)gmail.com), Dec 31 2008]
G.f.: 3(2+x^3)/((1-x)(1+x^3+x^6)). [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 21 2009]
|
|
|
CROSSREFS
| Sequence in context: A172360 A175288 A195692 * A080066 A144539 A090143
Adjacent sequences: A153506 A153507 A153508 * A153510 A153511 A153512
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Paul Curtz (bpcrtz(AT)free.fr), Dec 28 2008
|
|
|
EXTENSIONS
| More periods from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 21 2009
|
| |
|
|
