Fourth accumulation array, T, of the natural number array A000027, by antidiagonals.

Terms

a(0) =1a(1) =6a(2) =7a(3) =22a(4) =41a(5) =28a(6) =63a(7) =146a(8) =161a(9) =84a(10) =154a(11) =406a(12) =561a(13) =476a(14) =210a(15) =336a(16) =966a(17) =1526a(18) =1631a(19) =1176a(20) =462a(21) =672a(22) =2058a(23) =3556a(24) =4361a(25) =3976a(26) =2562a(27) =924a(28) =1254a(29) =4032