A091621 Row sums of triangle A091615.
1, 3, 7, 18, 43, 102, 241, 563, 1293, 2960, 6722, 15140, 33919, 75576, 167490, 369556, 811953, 1776993, 3875220, 8423004, 18251468, 39435686, 84980633, 182669118, 391736024, 838237802, 1789955529, 3814790598, 8115210879
Offset: 1