login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A199696 Products of distinct terms in n-th row of the triangle in A199333. 4
1, 1, 2, 3, 35, 91, 7337, 25493, 9351479, 42980489, 78695113801, 584834423801, 4754839123536133, 43472885623916761, 1887750276489057845213, 21019416307292530253881, 4675204650607654300508731931, 77008997457626136207428248409 (list; graph; refs; listen; history; text; internal format)
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: A126910 A143887 A141503 * A234423 A165448 A111459

Adjacent sequences:  A199693 A199694 A199695 * A199697 A199698 A199699

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Nov 09 2011

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 26 16:43 EDT 2020. Contains 337374 sequences. (Running on oeis4.)