Figurate numbers or binomial coefficients C(n,6).

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =1a(7) =7a(8) =28a(9) =84a(10) =210a(11) =462a(12) =924a(13) =1716a(14) =3003a(15) =5005a(16) =8008a(17) =12376a(18) =18564a(19) =27132a(20) =38760a(21) =54264a(22) =74613a(23) =100947a(24) =134596a(25) =177100a(26) =230230a(27) =296010a(28) =376740a(29) =475020