The third left hand column of triangle A167565.

Terms

a(0) =2a(1) =16a(2) =67a(3) =202a(4) =497a(5) =1064a(6) =2058a(7) =3684a(8) =6204a(9) =9944a(10) =15301a(11) =22750a(12) =32851a(13) =46256a(14) =63716a(15) =86088a(16) =114342a(17) =149568a(18) =192983a(19) =245938a(20) =309925a(21) =386584a(22) =477710a(23) =585260a(24) =711360a(25) =858312a(26) =1028601a(27) =1224902a(28) =1450087a(29) =1707232