A115128 Row sums of triangle A115127.

3, 13, 45, 148, 486, 1618, 5478, 18841, 65692, 231713, 825386, 2964937, 10728241, 39065505, 143047469, 526399048, 1945668327, 7220164256, 26889574045, 100469991084, 376513308113, 1414840405426, 5329942273203, 20125253091226

Offset: 2

Author

Wolfdieter Lang, Jan 13 2006

Keywords

• nonn
• easy

Formula

a(n)=sum(A115127(n, m), m=1..), n>=1.