A199696 Products of distinct terms in n-th row of the triangle in A199333.

1, 1, 2, 3, 35, 91, 7337, 25493, 9351479, 42980489, 78695113801, 584834423801, 4754839123536133, 43472885623916761, 1887750276489057845213, 21019416307292530253881, 4675204650607654300508731931, 77008997457626136207428248409

Offset

0,3

Comments

a(n) = product(A199333(n,k): 0 <= k <= n/2);

a020639(a(n)) = A008578(n); A006530(a(n)) = A199582(n).

Links

Table of n, a(n) for n=0..17.

Formula

a(n) = A007947(A199695(n)).

Prog

(Haskell)
a199696 n = product . (take (n `div` 2 + 1)) $ a199333_row n

Crossrefs

Sequence in context: A143887 A363499 A141503 * A234423 A165448 A111459

Adjacent sequences: A199693 A199694 A199695 * A199697 A199698 A199699

Keyword

nonn

Author

Reinhard Zumkeller, Nov 09 2011

Status

approved