66566

Appears in sequences

• Numbers having four 6's in base 10.at n=17A043516
• McKay-Thompson series of class 26A for Monster.at n=38A058596
• a(n) = floor((n+1/n)^4).at n=15A197603
• a(n) = 6*(10^(2*n+1)-1)/9 - 10^n.at n=2A332165
• Palindromes of the form k^2 + 2.at n=8A358237
• Consecutive internal states of the linear congruential pseudo-random number generator (421*s + 54773) mod 259200 when started at 1.at n=5A383129