|
Search: id:A135263
|
|
| |
|
| 2, 8, 28, 82, 244, 728, 2186, 6560, 19684, 59050, 177148, 531440, 1594322, 4782968, 14348908, 43046722, 129140164, 387420488, 1162261466, 3486784400, 10460353204, 31381059610, 94143178828, 282429536480, 847288609442
(list; graph; listen)
|
|
|
OFFSET
|
0,1
|
|
|
COMMENT
|
Digital roots yield a hexaperiodic sequence A010888(a(n))= 2, (8, 1, 1, 1, 8, 8,...), the period of length 6 put in parenthesis. Digital roots of A132357 are also hexaperiodic: 1, (4, 5, 5, 5, 4, 4, ....).
|
|
FORMULA
|
a(n)=3a(n-1)-a(n-3)+a(n-4).
|
|
CROSSREFS
|
Cf. A133448 (hexaperiodic sequence of digital roots).
Adjacent sequences: A135260 A135261 A135262 this_sequence A135264 A135265 A135266
Sequence in context: A150712 A150713 A082107 this_sequence A048497 A118047 A087431
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Paul Curtz (bpcrtz(AT)free.fr), Dec 02 2007
|
|
EXTENSIONS
|
Edited and extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 22 2008
|
|
|
Search completed in 0.002 seconds
|
