Number of perfect matchings in the twisted graph (C_4 X C_n)_{(13)(24)}.
A220868
Number of perfect matchings in the twisted graph (C_4 X C_n)_{(13)(24)}.
Terms
- a(0) =3a(1) =24a(2) =54a(3) =260a(4) =726a(5) =3096a(6) =10086a(7) =39940a(8) =140454a(9) =537624a(10) =1956246a(11) =7379204a(12) =27246966a(13) =102144024a(14) =379501254a(15) =1418981380a(16) =5285770566a(17) =19742287896a(18) =73621286646a(19) =274848860420
External references
- oeis: A220868