题解 | #尼科彻斯定理#
尼科彻斯定理
https://www.nowcoder.com/practice/dbace3a5b3c4480e86ee3277f3fe1e85
while True:
try:
n = int(input())
if n == 1:
print(1)
gap = n * n - n + 1
res = ''
for i in range(n):
if i < n-1:
temp = str(gap + i * 2) + '+'
else:
temp = str(gap + i * 2)
res += temp
print(res)
except:
break
