Triangle read by rows: T(n,k) = T(n,k-1) + T(n-1,k), T(n,0)=1, T(n,n) = T(n,n-1) + 1.

Terms

a(0) =1a(1) =1a(2) =2a(3) =1a(4) =3a(5) =4a(6) =1a(7) =4a(8) =8a(9) =9a(10) =1a(11) =5a(12) =13a(13) =22a(14) =23a(15) =1a(16) =6a(17) =19a(18) =41a(19) =64a(20) =65a(21) =1a(22) =7a(23) =26a(24) =67a(25) =131a(26) =196a(27) =197a(28) =1a(29) =8