89165

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 31.at n=12A031619
• Numbers n which are divisors of the number produced by concatenating (n-1), (n-2), ... (n-10) in that order.at n=21A088871
• Ceiling(n*exp(-sec(n))).at n=35A134910
• Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1000-1100-0111-0010 pattern in any orientation.at n=15A147153
• Fibonacci sequence beginning 10, 7.at n=20A190996