172917domain: NAppears in sequencesNumber of bipartite partitions of n white objects and 5 black ones.at n=21A0004915x - 1 sequence starting at 19 (a(n+1) = a(n)/2 if a(n) is even, or 5*a(n)-1 if a(n) is odd).at n=30A037238Numbers k such that k, k+2, k+4 are of the form p^2*q where p and q are distinct primes.at n=15A308735