135713

Appears in sequences

• Composite 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=20A083526
• Number of permutations of length n which avoid the patterns 1234, 1342, 4312.at n=15A116791