Column 4 of triangle A128545; a(n) is the coefficient of q^(4n+16) in the central q-binomial coefficient [2n+8,n+4].

A128554

Column 4 of triangle A128545; a(n) is the coefficient of q^(4n+16) in the central q-binomial coefficient [2n+8,n+4].

Terms

    a(0) =1a(1) =7a(2) =39a(3) =155a(4) =526a(5) =1555a(6) =4192a(7) =10465a(8) =24620a(9) =55038a(10) =117966a(11) =243723a(12) =487842a(13) =949446a(14) =1802547a(15) =3346632a(16) =6089910a(17) =10881277a(18) =19121293a(19) =33091141a(20) =56466398a(21) =95105255a(22) =158256685a(23) =260386761a(24) =423932473a(25) =683409993a(26) =1091521679a(27) =1728156294

External references