|
Search: id:A122704
|
|
| |
| |
|
|
OFFSET
|
0,3
|
|
|
COMMENT
|
a(n+1)=[1,4,22,160,1456,...]is the first Eulerian transform of A000244 (powers of 3), it is also the Stirling transform of A080599(n+1)=[1,3,12,66,450,...].
|
|
FORMULA
|
a(n) = Sum_{k, 0<=k<=n}A131689(n,k)*2^(n-k). - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Oct 09 2007
|
|
CROSSREFS
|
Adjacent sequences: A122701 A122702 A122703 this_sequence A122705 A122706 A122707
Sequence in context: A112697 A113717 A124563 this_sequence A087547 A000779 A053144
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Oct 22 2006
|
|
|
Search completed in 0.002 seconds
|
