Type D Eulerian triangle.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =11a(8) =11a(9) =1a(10) =1a(11) =44a(12) =102a(13) =44a(14) =1a(15) =1a(16) =157a(17) =802a(18) =802a(19) =157a(20) =1a(21) =1a(22) =530a(23) =5551a(24) =10876a(25) =5551a(26) =530a(27) =1a(28) =1a(29) =1731