50894domain: NAppears in sequencesNumbers whose base-15 representation has exactly 5 runs.at n=27A043672Numbers such that the digital sums in bases 3, 4, 5, 6 and 7 all are equal.at n=25A135129Number of binary strings of length n with no substrings equal to 0000 0110 or 0111.at n=21A164438