Nearest integer to Gamma(n + 1/8)/Gamma(1/8).

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =1a(5) =4a(6) =20a(7) =121a(8) =862a(9) =7000a(10) =63876a(11) =646743a(12) =7195013a(13) =87239530a(14) =1145018832a(15) =16173391002a(16) =244622538903