Irregular triangle read by rows: coefficients of polynomials xi_n.

Terms

a(0) =1a(1) =1a(2) =3a(3) =1a(4) =11a(5) =5a(6) =57a(7) =38a(8) =5a(9) =361a(10) =302a(11) =61a(12) =2763a(13) =2827a(14) =845a(15) =61a(16) =24611a(17) =29607a(18) =11421a(19) =1385a(20) =250737a(21) =347372a(22) =165678a(23) =30108a(24) =1385a(25) =2873041a(26) =4501564a(27) =2551326a(28) =610444a(29) =50521