47710domain: NAppears in sequencesNumber of even sequences with period 2n.at n=11A000208A000013 / 2.at n=20A054538Numbers n such that if x=sigma(n)-tau(n)-n then n=sigma(x)-tau(x)-x.at n=29A238227Consecutive states of the linear congruential pseudo-random number generator (257*s + 41) mod 2^16 when started at s=1.at n=21A384961