1259776domain: NAppears in sequencesa(n) = (6^n - (-2)^n)/8.at n=9A053524(3*6^n + 2^n)/4.at n=8A090040Numbers n which when converted to base 3, reversed and converted back to base 10 yield a number m such that n mod m = 0. Cases which are trivial or result in digit loss are excluded.at n=19A091077