Triangle read by rows, generated from Stirling cycle numbers.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =2a(6) =1a(7) =3a(8) =7a(9) =6a(10) =1a(11) =4a(12) =15a(13) =35a(14) =24a(15) =1a(16) =5a(17) =26a(18) =105a(19) =228a(20) =120a(21) =1a(22) =6a(23) =40a(24) =234a(25) =947a(26) =1834a(27) =720a(28) =1a(29) =7