Central terms of triangle A132427.

Terms

a(0) =1a(1) =1a(2) =3a(3) =10a(4) =43a(5) =216a(6) =1241a(7) =7988a(8) =56763a(9) =440254a(10) =3693728a(11) =33281359a(12) =320112326a(13) =3270177860a(14) =35329070470a(15) =402128329243