Ceiling of Gamma(n+1/4)/Gamma(1/4).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =10a(6) =51a(7) =319a(8) =2311a(9) =19061a(10) =176311a(11) =1807182a(12) =20330789a(13) =249052162a(14) =3299941146a(15) =47024161318a(16) =717118460091