21154245112domain: NAppears in sequencesa(1) = 1, a(n) = smallest palindromic multiple of a(n-1).at n=10A068664a(1) = 7; a(n) = smallest palindromic multiple of a(n-1).at n=7A068667a(1) = 11; a(n) = smallest palindromic multiple of a(n-1).at n=9A070069