Brilliant numbers (A078972) whose digit reversal is a triangular number.

Terms

a(0) =6a(1) =10a(2) =649a(3) =1207a(4) =54253a(5) =56341a(6) =60391a(7) =66259a(8) =66331a(9) =101971a(10) =155143a(11) =166339a(12) =351433a(13) =672319a(14) =3003193a(15) =3054853a(16) =5043763a(17) =5631229a(18) =5858119a(19) =6163831a(20) =6256603a(21) =6462847a(22) =6473899a(23) =6556177a(24) =6687883a(25) =8210989a(26) =8236513a(27) =8735491a(28) =8788033a(29) =10716571