Triangle read by rows: T(n,k) = (2^n-1)*2^(k-1), for n >= 1 and 1<=k<=n.

Terms

a(0) =1a(1) =3a(2) =6a(3) =7a(4) =14a(5) =28a(6) =15a(7) =30a(8) =60a(9) =120a(10) =31a(11) =62a(12) =124a(13) =248a(14) =496a(15) =63a(16) =126a(17) =252a(18) =504a(19) =1008a(20) =2016a(21) =127a(22) =254a(23) =508a(24) =1016a(25) =2032a(26) =4064a(27) =8128a(28) =255a(29) =510