|
Search: id:A105938
|
|
| |
|
| 10, 45, 126, 280, 540, 945, 1540, 2376, 3510, 5005, 6930, 9360, 12376, 16065, 20520, 25840, 32130, 39501, 48070, 57960, 69300, 82225, 96876, 113400, 131950, 152685, 175770, 201376, 229680, 260865, 295120, 332640, 373626, 418285, 466830, 519480
(list; graph; listen)
|
|
|
OFFSET
|
0,1
|
|
|
FORMULA
|
G.f.: (x^2-5*x+10)/(1-x)^5. [From Alois P. Heinz (heinz(AT)hs-heilbronn.de), Oct 16 2008]
|
|
EXAMPLE
|
If n=0 then C(0+2,0)*C(0+5,2)= C(2,0)*C(5,2)=1*10=10
If n=9 then C(9+2,9)*C(9+5,2)= C(11,9)*C(14,2)=55*91=5005
|
|
MAPLE
|
a:= n-> binomial (n+2, n) *binomial (n+5, 2): seq (a(n), n=0..40); [From Alois P. Heinz (heinz(AT)hs-heilbronn.de), Oct 16 2008]
|
|
CROSSREFS
|
Cf. A062145.
Sequence in context: A009540 A010926 A045852 this_sequence A022605 A037270 A027800
Adjacent sequences: A105935 A105936 A105937 this_sequence A105939 A105940 A105941
|
|
KEYWORD
|
easy,nonn
|
|
AUTHOR
|
Zerinvary Lajos (zlaja(AT)freemail.hu), Apr 27 2005
|
|
EXTENSIONS
|
More terms from Alois P. Heinz (heinz(AT)hs-heilbronn.de), Oct 16 2008
|
|
|
Search completed in 0.002 seconds
|
