136489domain: NAppears in sequencesa(n) is the coefficient of the linear term in the polynomial (x-prime(n))*(x-prime(n+1))*(x-prime(n+2))*(x-prime(n+3))*(x-prime(n+4)).at n=3A127489Number of ways to partition an n X 3 grid into 3 connected equal-area regions.at n=16A167243