|
| |
| |
|
|
|
21, 21, 21, 42, 42, 42, 84, 84, 84, 168, 168, 168, 336, 336, 336, 672, 672, 672, 1344, 1344, 1344, 2688, 2688, 2688, 5376, 5376, 5376, 10752, 10752, 10752, 21504, 21504, 21504, 43008, 43008, 43008, 86016, 86016, 86016, 172032, 172032, 172032, 344064
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,1
|
|
|
COMMENTS
| a(n) divided by 21 is the sequence 1,1,1,2,2,2,4,4,4,.., that is A000079 triplicated.
|
|
|
CROSSREFS
| Sequence in context: A195033 A154352 A010860 * A151910 A040421 A022355
Adjacent sequences: A158769 A158770 A158771 * A158773 A158774 A158775
|
|
|
KEYWORD
| nonn,less
|
|
|
AUTHOR
| Paul Curtz (bpcrtz(AT)free.fr), Mar 26 2009
|
|
|
EXTENSIONS
| Edited by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 17 2009
|
| |
|
|
