Triangle T(n,k) read by rows. T(n,1)=1; T(n,k) = Sum_{i=1..k-1} ( T(n-i,k-1) + T(n-i,k) ), k>1.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =3a(8) =4a(9) =1a(10) =1a(11) =4a(12) =10a(13) =6a(14) =1a(15) =1a(16) =5a(17) =21a(18) =22a(19) =8a(20) =1a(21) =1a(22) =6a(23) =40a(24) =64a(25) =38a(26) =10a(27) =1a(28) =1a(29) =7