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

Terms

a(0) =711a(1) =1251a(2) =1712a(3) =2132a(4) =2616a(5) =2812a(6) =2934a(7) =3357a(8) =3441a(9) =3781a(10) =3812a(11) =4156a(12) =4288a(13) =4842a(14) =4971a(15) =4972a(16) =5346a(17) =5382a(18) =5659a(19) =5842a(20) =5886a(21) =6147a(22) =6159a(23) =6402a(24) =6734a(25) =7062a(26) =7312a(27) =7403a(28) =7592a(29) =7722