

A196568


Binomial coefficients of the form C(n, 3) that are products of binomial coefficients of the form C(n, 3).


0




OFFSET

1,1


COMMENTS

a(11), if it exists, > C(5*10^6,3). [D. S. McNeil, Oct 26 2011]


LINKS

Table of n, a(n) for n=1..10.
Erich Friedman, Problem of the month October 2011


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)
and so on.


CROSSREFS

Sequence in context: A169719 A104591 A318119 * A171347 A193171 A013487
Adjacent sequences: A196565 A196566 A196567 * A196569 A196570 A196571


KEYWORD

nonn,more


AUTHOR

Kausthub Gudipati, Oct 04 2011


STATUS

approved



