Antidiagonal sums of the convolution array A213783.

Terms

a(0) =1a(1) =4a(2) =12a(3) =27a(4) =52a(5) =92a(6) =148a(7) =230a(8) =335a(9) =480a(10) =656a(11) =889a(12) =1162a(13) =1512a(14) =1912a(15) =2412a(16) =2973a(17) =3660a(18) =4420a(19) =5335a(20) =6336a(21) =7524a(22) =8812a(23) =10322a(24) =11947a(25) =13832a(26) =15848a(27) =18165a(28) =20630a(29) =23440