135175domain: NAppears in sequencesNumber of polyominoes consisting of 7 regular unit n-gons.at n=16A103473a(n) = 33*2^(n+1) + 7.at n=11A196655Numbers of the form k + wt(k) for exactly four distinct k, where wt(k) = A000120(k) is the binary weight of k.at n=16A227915