Ceiling of Gamma(n+1/7)/Gamma(1/7).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =5a(6) =24a(7) =144a(8) =1028a(9) =8371a(10) =76528a(11) =776208a(12) =8649166a(13) =105025576a(14) =1380336142a(15) =19521896862a(16) =295617295327