%I #9 May 24 2024 15:51:57
%S 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,
%T 68,94,125,249,123,64,67,100,140,188,249,497,248,124,102,146,208,282,
%U 374,497,993,497,247,166,213,308,422,562,746,993,1985,994,495,290,315,454,630,844,1120,1490,1985
%N 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.
%Y Cf. A027649 (main diagonal).
%K nonn,tabl
%O 1,2
%A _Benoit Cloitre_, Aug 12 2003