120362domain: NAppears in sequencesNumbers n such that 213*2^n-1 is prime.at n=37A050858Related to enumeration of free catapolyoctagons (see Cyvin reference for precise definition).at n=7A121121Number of length n+7 0..1 arrays with at most two downsteps in every 7 consecutive neighbor pairs.at n=10A256815