A085870 Array defined by T(i,1)=2^i-1, T(1,j)=2^j-1, T(i,j)=T(i-1,j)+T(i-1,j-1) read by antidiagonals

1, 3, 3, 7, 4, 7, 15, 7, 10, 15, 31, 14, 14, 22, 31, 63, 29, 21, 32, 46, 63, 125, 60, 35, 46, 68, 94, 125, 249, 123, 64, 67, 100, 140, 188, 249, 497, 248, 124, 102, 146, 208, 282, 374, 497, 993, 497, 247, 166, 213, 308, 422, 562, 746, 993, 1985, 994, 495, 290, 315, 454, 630, 844, 1120, 1490, 1985