Fifth column of triangle A067323.

Terms

a(0) =14a(1) =56a(2) =202a(3) =715a(4) =2529a(5) =8986a(6) =32123a(7) =115556a(8) =418200a(9) =1521976a(10) =5567551a(11) =20462525a(12) =75528895a(13) =279874350a(14) =1040790135a(15) =3883140600a(16) =14531382060a(17) =54529456320a(18) =205146226200a(19) =773608833894