Triangle read by rows: T(n,k) is the coefficient of x^k in the ZZ polynomial of the hexagonal graphene flake O(3,3,n).

A338158

Triangle read by rows: T(n,k) is the coefficient of x^k in the ZZ polynomial of the hexagonal graphene flake O(3,3,n).

Terms

    a(0) =20a(1) =30a(2) =12a(3) =1a(4) =175a(5) =450a(6) =425a(7) =180a(8) =33a(9) =2a(10) =980a(11) =3308a(12) =4458a(13) =3065a(14) =1140a(15) =225a(16) =22a(17) =1a(18) =4116a(19) =16468a(20) =27293a(21) =24262a(22) =12521a(23) =3796a(24) =653a(25) =58a(26) =2a(27) =14112a(28) =63522a(29) =120848

External references