71480

Appears in sequences

• Number of ways to place 4 nonattacking knights on a 4 X n board.at n=10A172213
• a(n) = a(n-2)+a(n-4); a(1)=a(4)=101, a(2)=a(3)=10.at n=32A180236
• Number of positive solutions to (x_1)^2 + (x_2)^2 + ... + (x_7)^2 <= n^2.at n=6A341426