Binomial coefficient C(28,n).

Terms

a(0) =1a(1) =28a(2) =378a(3) =3276a(4) =20475a(5) =98280a(6) =376740a(7) =1184040a(8) =3108105a(9) =6906900a(10) =13123110a(11) =21474180a(12) =30421755a(13) =37442160a(14) =40116600a(15) =37442160a(16) =30421755a(17) =21474180a(18) =13123110a(19) =6906900a(20) =3108105a(21) =1184040a(22) =376740a(23) =98280a(24) =20475a(25) =3276a(26) =378a(27) =28a(28) =1