Source code in the sidef programming language

var format = "%11s %24s %38s\n"
format.printf("decimal", "ternary", "binary")
format.printf(0, 0, 0)

for n in (0 .. 2e5) {
    var pal = n.base(3)||''
    var b3 = (pal + '1' + pal.flip)
    var b2 = Num(b3, 3).base(2)
    if (b2 == b2.flip) {
        format.printf(Num(b2, 2), b3, b2)
    }
}