Triangle defined by T(n+1, k) = T(n, k-1) + T(n-1, k), T(n,1) = 1, T(1,k) = 1, T(2,k) = min(2,k).

Terms

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