Numbers equal to the sum of three oblong numbers in arithmetic progression.

Terms

a(0) =18a(1) =126a(2) =168a(3) =216a(4) =468a(5) =918a(6) =1026a(7) =1140a(8) =1260a(9) =1518a(10) =1950a(11) =2106a(12) =2268a(13) =2790a(14) =3168a(15) =3996a(16) =4218a(17) =5418a(18) =5676a(19) =5940a(20) =6210a(21) =6768a(22) =7056a(23) =7650a(24) =8268a(25) =8910a(26) =9240a(27) =9576a(28) =9918a(29) =10266