A107394 C(n+2,2)*C(n+4,2).

6, 30, 90, 210, 420, 756, 1260, 1980, 2970, 4290

Offset: 0

Author

Zerinvary Lajos, May 25 2005

Keywords

• dead

Comments

Duplicates A033487.

Examples

			If n=0 then C(0+2,2)*C(0+4,2)= C(2,2)*C(4,2)=1*6=6
If n=4 then C(4+2,2)*C(4+4,2)= C(6,2)*C(8,2)=15*28=420
		

Crossrefs

Cf. A062196.

Formula

a(n)=A033487(n+1). [From R. J. Mathar, Aug 24 2008]