Ceiling of Gamma(n+7/10)/Gamma(7/10).

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =12a(5) =56a(6) =319a(7) =2134a(8) =16431a(9) =142946a(10) =1386570a(11) =14836295a(12) =173584650a(13) =2204525052a(14) =30201993206a(15) =443969300124