|
Search: id:A147651
|
|
| |
|
| 0, 27, 72, 135, 216, 315, 432, 567, 720, 891, 1080, 1287, 1512, 1755, 2016, 2295, 2592, 2907, 3240, 3591, 3960, 4347, 4752, 5175
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
COMMENT
|
a(n)=9n(n+2). a(n)=a(n-1)+9*A144396. Linked to A144454.
|
|
FORMULA
|
a(n)=18*n+a(n-1)-9 (with a(1)=0) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 13 2009]
|
|
EXAMPLE
|
For n=2, a(2)=18*2+0-9=27; n=3, a(3)=18*3+27-9=72; n=4, a(4)=18*4+72-9=135 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 13 2009]
|
|
CROSSREFS
|
Sequence in context: A039414 A043237 A044017 this_sequence A163506 A044165 A044546
Adjacent sequences: A147648 A147649 A147650 this_sequence A147652 A147653 A147654
|
|
KEYWORD
|
nonn,new
|
|
AUTHOR
|
Paul Curtz (bpcrtz(AT)free.fr), Nov 09 2008
|
|
|
Search completed in 0.002 seconds
|
