Magic sums of 3 X 3 semimagic squares composed of triangular numbers.

Terms

a(0) =711a(1) =1251a(2) =1527a(3) =1712a(4) =2132a(5) =2486a(6) =2616a(7) =2812a(8) =2934a(9) =3357a(10) =3441a(11) =3781a(12) =3812a(13) =4156a(14) =4288a(15) =4842a(16) =4971a(17) =4972a(18) =5034a(19) =5346a(20) =5382a(21) =5659a(22) =5842a(23) =5886a(24) =6147a(25) =6159a(26) =6402a(27) =6734a(28) =6747a(29) =7062