题解 | #等差数列#
等差数列
https://www.nowcoder.com/practice/f792cb014ed0474fb8f53389e7d9c07f
n = int(input())
l1 = []
num = 2
for i in range(1, n+1):
l1.append(num)
num += 3
print(sum(l1))
等差数列
https://www.nowcoder.com/practice/f792cb014ed0474fb8f53389e7d9c07f
n = int(input())
l1 = []
num = 2
for i in range(1, n+1):
l1.append(num)
num += 3
print(sum(l1))
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