Exponential transform of C(n,6) = A000579.

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =1a(7) =7a(8) =28a(9) =84a(10) =210a(11) =462a(12) =1386a(13) =13728a(14) =171171a(15) =1686685a(16) =13461448a(17) =91495768a(18) =551777772a(19) =3142726692a(20) =19787406360a(21) =172188951144