|
Search: id:A131927
|
|
|
| A131927 |
|
Series reversion of x(1-9x)/(1-x) . |
|
+0
3
|
|
| 0, 1, 8, 136, 2888, 68680, 1749896, 46707976, 1289214152, 36496595656, 1053849164552, 30918300671368, 919029058099784, 27617782977715528, 837674888992142984, 25610757376777402888, 788450850824647610312
(list; graph; listen)
|
|
|
OFFSET
|
0,3
|
|
|
COMMENT
|
The Hankel transform of this sequence is 72^C(n+1,2) .
|
|
FORMULA
|
a(n) = Sum_{k, 0<=k<=n}A086810(n,k)*8^k .
G.f.=[1+x-sqrt(1-34x+x^2)]/18. - Emeric Deutsch (deutsch(AT)duke.poly.edu), Nov 19 2007
|
|
MAPLE
|
G:=(1+x-sqrt(1-34*x+x^2))*1/18: Gser:=series(G, x=0, 21): seq(coeff(Gser, x, n), n =0..17); - Emeric Deutsch (deutsch(AT)duke.poly.edu), Nov 19 2007
|
|
CROSSREFS
|
Sequence in context: A007032 A069988 A072072 this_sequence A132869 A036915 A049211
Adjacent sequences: A131924 A131925 A131926 this_sequence A131928 A131929 A131930
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Oct 29 2007
|
|
EXTENSIONS
|
More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Nov 19 2007
|
|
|
Search completed in 0.002 seconds
|
