Nearest integer to Gamma(n + 7/10)/Gamma(7/10).

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =12a(5) =56a(6) =318a(7) =2134a(8) =16430a(9) =142945a(10) =1386570a(11) =14836295a(12) =173584650a(13) =2204525052a(14) =30201993206a(15) =443969300123