Nearest integer to Gamma(n + 5/8)/Gamma(5/8).

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =10a(5) =45a(6) =251a(7) =1666a(8) =12701a(9) =109544a(10) =1054364a(11) =11202617a(12) =130230419a(13) =1644159040a(14) =22401666926a(15) =327624378798