|
| |
|
|
A128147
|
|
Denominators of Hankel transform of 1/J(n+1), where J(n)=A001045(n).
|
|
1
| |
|
|
1, 3, 7425, 47324536875, 25638858602403023525625, 12884448481414473203775367576406984041875, 115708032002378912987246508786002888051981871843289603877158640625
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,2
|
|
|
COMMENTS
| Numerators are A128146.
|
|
|
FORMULA
| a(n)=Product_{k=1..2n-1} J(n)^(n-abs(k-n))}/Product_{k=1..n} Product_{i=1..k-1} J(i)}}^2; a(n)=J(n)^n*product{k=1..n-1, J(n-k)^(n-k)*J(n+k)^(n-k)}/product{k=0..n-1,product{i=1..k, J(i)}^2};
|
|
|
CROSSREFS
| Sequence in context: A056749 A134776 A062595 * A068918 A158036 A171363
Adjacent sequences: A128144 A128145 A128146 * A128148 A128149 A128150
|
|
|
KEYWORD
| easy,nonn,frac
|
|
|
AUTHOR
| Paul Barry (pbarry(AT)wit.ie), Feb 16 2007
|
| |
|
|
