|
| |
|
|
A087448
|
|
3^(n-1)(n+3)/2-(n-1)/2.
|
|
1
| |
|
|
1, 2, 7, 26, 93, 322, 1091, 3642, 12025, 39362, 127935, 413338, 1328597, 4251522, 13551739, 43046714, 136314609, 430467202, 1355971703, 4261625370, 13366006861, 41841412802, 130754415027, 407953774906, 1270932914153
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,2
|
|
|
COMMENTS
| Binomial transform of A087447. Second binomial transform of 1,0,3,0,5,0,7,... (A005408).
|
|
|
CROSSREFS
| Sequence in context: A000697 A027417 A134063 * A188860 A129273 A055988
Adjacent sequences: A087445 A087446 A087447 * A087449 A087450 A087451
|
|
|
KEYWORD
| easy,nonn
|
|
|
AUTHOR
| Paul Barry (pbarry(AT)wit.ie), Sep 05 2003
|
| |
|
|
