A061929 Triangle with n >= k >= 0 where a(n,k) = 2^k*3^(n-k)*(C(n+1,0)+C(n+1,1)+...C(n+1,k)).

1, 3, 6, 9, 24, 28, 27, 90, 132, 120, 81, 324, 576, 624, 496, 243, 1134, 2376, 3024, 2736, 2016, 729, 3888, 9396, 13824, 14256, 11520, 8128, 2187, 13122, 35964, 60264, 70416, 63072, 47424, 32640, 6561, 43740, 134136, 252720, 331776, 330048, 268416

Offset: 0

Author

Henry Bottomley, May 22 2001

Keywords

• nonn
• tabl

Examples

			Rows start (1), (3,6), (9,24,68), (27,90,132,120) etc.
		

Crossrefs

Row sums are 5^(n+1)-4^(n+1), i.e. A005060. Cf. A061930.

Formula

a(n, k) =A054143(n, k)*A036561(n, n-k)