0,2

f := n->(6*n)!/( (n!)^3*(3*n)!);

Sequence in context: A074653 A065961 A058528 this_sequence A107446 A008978 A077692

Adjacent sequences: A001418 A001419 A001420 this_sequence A001422 A001423 A001424

nonn

njas, KUPK78A(AT)prodigy.com (Glenn K Painter)