83425

Appears in sequences

• a(n) = floor(n(n-1)(n-2)(n-3)/19).at n=37A011929
• Integers n not of form 3m+2 such that for any integer k > 0, n*10^k+1 has a divisor in the set { 7, 11, 13, 37 }.at n=18A243969