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

Terms

a(0) =1a(1) =2a(2) =2a(3) =3a(4) =9a(5) =4a(6) =4a(7) =36a(8) =44a(9) =12a(10) =5a(11) =110a(12) =355a(13) =250a(14) =48a(15) =6a(16) =300a(17) =2010a(18) =3480a(19) =1644a(20) =240a(21) =7a(22) =777a(23) =9625a(24) =32235a(25) =35728a(26) =12348a(27) =1440a(28) =8a(29) =1960