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

Terms

a(0) =1a(1) =1a(2) =2a(3) =1a(4) =5a(5) =3a(6) =1a(7) =11a(8) =11a(9) =4a(10) =1a(11) =23a(12) =33a(13) =19a(14) =5a(15) =1a(16) =47a(17) =89a(18) =71a(19) =29a(20) =6a(21) =1a(22) =95a(23) =225a(24) =231a(25) =129a(26) =41a(27) =7a(28) =1a(29) =191