Triangle T read by rows: differences of Motzkin triangle (A026300).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =2a(8) =3a(9) =2a(10) =1a(11) =3a(12) =6a(13) =7a(14) =5a(15) =1a(16) =4a(17) =10a(18) =16a(19) =18a(20) =12a(21) =1a(22) =5a(23) =15a(24) =30a(25) =44a(26) =46a(27) =30a(28) =1a(29) =6