Triangle T(n,k), n>=1, 0<=k<=(3+3^n)/2, read by rows: row n gives the coefficients of the chromatic polynomial of the Sierpinski gasket graph S_n, highest powers first.
A193277
Triangle T(n,k), n>=1, 0<=k<=(3+3^n)/2, read by rows: row n gives the coefficients of the chromatic polynomial of the Sierpinski gasket graph S_n, highest powers first.
Terms
- a(0) =1a(1) =-3a(2) =2a(3) =0a(4) =1a(5) =-9a(6) =32a(7) =-56a(8) =48a(9) =-16a(10) =0a(11) =1a(12) =-27a(13) =339a(14) =-2625a(15) =14016a(16) =-54647a(17) =160663a(18) =-362460a(19) =631828a(20) =-848736a(21) =866640a(22) =-653248a(23) =343744a(24) =-112896a(25) =17408a(26) =0a(27) =1a(28) =-81a(29) =3204
External references
- oeis: A193277