Exponential transform of C(n,7) = A000580.

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =1a(8) =8a(9) =36a(10) =120a(11) =330a(12) =792a(13) =1716a(14) =5148a(15) =57915a(16) =835120a(17) =9354488a(18) =84047184a(19) =638567124a(20) =4256855760a(21) =25607297880a(22) =144863655024a(23) =869425029957