Binomial coefficients C(2*n+5,5).

Terms

a(0) =1a(1) =21a(2) =126a(3) =462a(4) =1287a(5) =3003a(6) =6188a(7) =11628a(8) =20349a(9) =33649a(10) =53130a(11) =80730a(12) =118755a(13) =169911a(14) =237336a(15) =324632a(16) =435897a(17) =575757a(18) =749398a(19) =962598a(20) =1221759a(21) =1533939a(22) =1906884a(23) =2349060a(24) =2869685a(25) =3478761a(26) =4187106a(27) =5006386a(28) =5949147a(29) =7028847