7149840domain: NAppears in sequencesa(n) = if n mod 2 = 1 then (n^2-1)*n^3/4 else n^5/4.at n=31A122657a(n) = ((n-th prime)^5-(n-th prime)^3)/4.at n=10A138434Number of 2-step self-avoiding walks on an n X n X n X n 4-cube summed over all starting positions.at n=30A188785