123264

Appears in sequences

• 9-automorphic numbers ending in 4: final digits of 9*n^2 agree with n.at n=5A030994
• Smallest multiple of the concatenation of n down to 1 that begins with the concatenation of 1 up to n.at n=2A078206
• a(n) = largest k such that A049820(k) <= A262509(n).at n=34A263083
• a(n) = largest k such that A049820(k) <= A262509(n).at n=35A263083