Antidiagonal sums of square array A082011.

Terms

a(0) =2a(1) =8a(2) =39a(3) =80a(4) =205a(5) =378a(6) =665a(7) =1056a(8) =1629a(9) =2290a(10) =3201a(11) =4356a(12) =5707a(13) =7406a(14) =9255a(15) =11472a(16) =14161a(17) =17280a(18) =20767a(19) =24400a(20) =28917a(21) =33660a(22) =38985a(23) =45192a(24) =51875a(25) =59098a(26) =66825a(27) =75572a(28) =84709a(29) =95040