|
| |
|
|
A299429
|
|
a(n) = binomial((n+1)*(2*n+1), n) / ((n+1)*(2*n+1)).
|
|
4
|
|
|
|
1, 1, 7, 117, 3311, 135408, 7324878, 495729741, 40411916335, 3861208027677, 423601805745460, 52513639293534510, 7263163165618323432, 1109176062938132317300, 185415009041446934481180, 33681956588219177374026429, 6607825171826115567872400495, 1392510451119380284814728497375
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
0,3
|
|
|
COMMENTS
|
a(n) = A299428(n) / (n+1)^2.
|
|
|
LINKS
|
Paul D. Hanna, Table of n, a(n) for n = 0..200
|
|
|
PROG
|
(PARI) {a(n) = binomial((n+1)*(2*n+1), n)/((n+1)*(2*n+1)) }
for(n=0, 20, print1(a(n), ", "))
|
|
|
CROSSREFS
|
Cf. A299427, A299428.
Sequence in context: A050285 A096760 A178791 * A297308 A077394 A009696
Adjacent sequences: A299426 A299427 A299428 * A299430 A299431 A299432
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
Paul D. Hanna, Feb 19 2018
|
|
|
STATUS
|
approved
|
| |
|
|
