Antidiagonal sums of A342819.

Terms

a(0) =0a(1) =0a(2) =0a(3) =4a(4) =11a(5) =25a(6) =42a(7) =70a(8) =101a(9) =147a(10) =196a(11) =264a(12) =335a(13) =429a(14) =526a(15) =650a(16) =777a(17) =935a(18) =1096a(19) =1292a(20) =1491a(21) =1729a(22) =1970a(23) =2254a(24) =2541a(25) =2875a(26) =3212a(27) =3600a(28) =3991a(29) =4437