63801domain: NAppears in sequencesa(n) = n^7 - (n-1)^7 + (n-2)^7 - ... + ((-1)^n)*0^7.at n=5A152726Alternating sums of powers for 1,2,3,4 and 5.at n=7A198628Number of non-equivalent ways under symmetry in one axis that 2 non-attacking kings of different colors can be placed on an n X n board.at n=18A357740