Triangle of D-analogs of Stirling numbers of the 2nd kind.

Terms

a(0) =1a(1) =1a(2) =0a(3) =1a(4) =2a(5) =1a(6) =1a(7) =6a(8) =7a(9) =1a(10) =1a(11) =12a(12) =34a(13) =24a(14) =1a(15) =1a(16) =20a(17) =110a(18) =190a(19) =81a(20) =1a(21) =1a(22) =30a(23) =275a(24) =920a(25) =1051a(26) =268a(27) =1a(28) =1a(29) =42