Add the odds and get the squares!
1 + 3 = 4, 1 + 3 + 5 = 9, 1 + 3 + 5 + 7 = 16, 1 + 3 + 5 + 7 + 9 = 25,
1 + 3 + 5 + 7 + 9 + 11 = 36
1 + 3 = 4, 1 + 3 + 5 = 9, 1 + 3 + 5 + 7 = 16, 1 + 3 + 5 + 7 + 9 = 25,
1 + 3 + 5 + 7 + 9 + 11 = 36
