392899domain: NAppears in sequencesComposite n such that both n and its reversal in base 10 are squarefree, none of the prime factors of n are palindromes and the prime factors of the reversal of n are the reversals of those of n.at n=29A083526Number of ways to select 3 or more collinear points from a 3 X n grid.at n=16A355551