|
|
A196568
|
|
Binomial coefficients of the form C(k, 3) that are products of two other binomial coefficients of the form C(k, 3).
|
|
1
|
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
a(11), if it exists, > C(5*10^6, 3). - D. S. McNeil, Oct 26 2011
|
|
LINKS
|
|
|
EXAMPLE
|
560 = C( 16, 3) = C( 8, 3) * C( 5, 3);
19600 = C( 50, 3) = C(16, 3) * C( 7, 3);
43680 = C( 65, 3) = C(14, 3) * C(10, 3);
893200 = C(176, 3) = C(30, 3) * C(12, 3).
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,more
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|