A107028 Row sums of number triangle A107027.

1, 3, 5, 9, 19, 49, 155, 591, 2651, 13689, 80009, 522193, 3762273, 29629483, 252966249, 2325176147, 22874076091, 239615657133, 2661015200515, 31207545002577, 385191232715737, 4988767088734625, 67615869255979521

Offset: 0

Author

Paul Barry, May 09 2005

Keywords

• easy
• nonn

Formula

a(n)=sum{k=0..n, (n-k-1)C((n-k)*k, k)-(n-k-2)*sum{j=0..k, C((n-k)*k, j)}}