61232domain: NAppears in sequencesNumber of binary trees of path length n.at n=37A095830Number of binary strings of length n with no substrings equal to 0000 0001 or 0101.at n=16A164410a(n) = Sum_{k=0..n} 2^k*(n!/k!)^2.at n=5A228513Central nonzero values of A231599.at n=18A269298