20597

Appears in sequences

• Coordination sequence for sigma-CrFe, Position Xa.at n=36A009962
• Discriminants of real quadratic fields with class number 1 and related continued fraction period length of 18.at n=57A050967
• a(1) = 2, a(n) = a(n-1) + 3*(a(n-1)-floor(a(n-1)^(1/3))^3).at n=23A096295
• Numbers k such that the sum of the squares of the first k primes is divisible by k.at n=6A111441
• Consecutive states of the linear congruential pseudo-random number generator (1291*s + 4621) mod 21870 when started at s=1.at n=16A385337