Binomial coefficients: C(n,k), 3 <= k <= n-3, sorted.

Terms

a(0) =20a(1) =35a(2) =35a(3) =56a(4) =56a(5) =70a(6) =84a(7) =84a(8) =120a(9) =120a(10) =126a(11) =126a(12) =165a(13) =165a(14) =210a(15) =210a(16) =220a(17) =220a(18) =252a(19) =286a(20) =286a(21) =330a(22) =330a(23) =364a(24) =364a(25) =455a(26) =455a(27) =462a(28) =462a(29) =495