Triangle read by rows: T(n,k) = (2^(n+1)-1)*binomial(n,k).

Terms

a(0) =1a(1) =3a(2) =3a(3) =7a(4) =14a(5) =7a(6) =15a(7) =45a(8) =45a(9) =15a(10) =31a(11) =124a(12) =186a(13) =124a(14) =31a(15) =63a(16) =315a(17) =630a(18) =630a(19) =315a(20) =63a(21) =127a(22) =762a(23) =1905a(24) =2540a(25) =1905a(26) =762a(27) =127a(28) =255a(29) =1785