A coefficients of characteristic polynomials of A_n Cartan matrices times their transposes: t(n,m,d)=If[ n == m, 2, If[n == m - 1 || n == m + 1, -1, 0]]. M(d)=t(n,m,d)*Transpose[t(n,m,d)].
A158199
A coefficients of characteristic polynomials of A_n Cartan matrices times their transposes: t(n,m,d)=If[ n == m, 2, If[n == m - 1 || n == m + 1, -1, 0]]. M(d)=t(n,m,d)*Transpose[t(n,m,d)].
Terms
- a(0) =1a(1) =4a(2) =-1a(3) =9a(4) =-10a(5) =1a(6) =16a(7) =-52a(8) =16a(9) =-1a(10) =25a(11) =-190a(12) =131a(13) =-22a(14) =1a(15) =36a(16) =-553a(17) =736a(18) =-246a(19) =28a(20) =-1a(21) =49a(22) =-1372a(23) =3206a(24) =-1870a(25) =397a(26) =-34a(27) =1a(28) =64a(29) =-3024
External references
- oeis: A158199