58447domain: NAppears in sequencesNumber of binary strings of length n with no substrings equal to 0001, 1010, or 1100.at n=26A164487Coefficients of the generalized continued fraction expansion Pi = a(1) +a(1)/(a(2) +a(2)/(a(3) +a(3)/(a(4) +a(4)/....))).at n=15A233582