Triangle T(n,k) read by rows: coefficients of polynomials P_n(t) defined in Formula section.

Terms

a(0) =0a(1) =0a(2) =1a(3) =1a(4) =1a(5) =2a(6) =1a(7) =1a(8) =3a(9) =5a(10) =3a(11) =9a(12) =17a(13) =6a(14) =2a(15) =30a(16) =41a(17) =26a(18) =10a(19) =81a(20) =131a(21) =111a(22) =30a(23) =5a(24) =242a(25) =491a(26) =357a(27) =134a(28) =35a(29) =838