Antidiagonal sums of A086272 (and of A086273).

Terms

a(0) =1a(1) =4a(2) =12a(3) =29a(4) =60a(5) =111a(6) =189a(7) =302a(8) =459a(9) =670a(10) =946a(11) =1299a(12) =1742a(13) =2289a(14) =2955a(15) =3756a(16) =4709a(17) =5832a(18) =7144a(19) =8665a(20) =10416a(21) =12419a(22) =14697a(23) =17274a(24) =20175a(25) =23426a(26) =27054a(27) =31087a(28) =35554a(29) =40485