|
Search: id:A126596
|
|
|
| A126596 |
|
a(n)=binomial(4*n,n)*(2*n+1)/(3*n+1). |
|
+0
2
|
|
| 1, 3, 20, 154, 1260, 10659, 92092, 807300, 7152444, 63882940, 574221648, 5188082354, 47073334100, 428634152730, 3914819231400, 35848190542920, 329007937216860, 3025582795190340, 27872496751392496, 257172019222240200
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
FORMULA
|
a(n)=A039599(2*n,n).
|
|
MAPLE
|
seq((2*n+1)*binomial(4*n, n)/(3*n+1), n=0..22); - Emeric Deutsch (deutsch(AT)duke.poly.edu), Mar 27 2007
|
|
CROSSREFS
|
Sequence in context: A026303 A091172 A091168 this_sequence A074560 A123355 A012882
Adjacent sequences: A126593 A126594 A126595 this_sequence A126597 A126598 A126599
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Mar 13 2007
|
|
EXTENSIONS
|
More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Mar 27 2007
|
|
|
Search completed in 0.002 seconds
|
