소스 코드 제출

#
#
# arr=[]
# w=0
# for i in range(9) :
#     tmp= list(map(int,input().split()))
#     arr.append(tmp)
# a,b=map(int,input().split())
# a=a-1
# b=b-1
# if arr[a][b]==1 :
#     print("-1")
# else :
#
#     for i in range(a-1,a+2) :
#         for j in range(b-1,b+2) :
#             if 0<=i<9 and 0<=j<9 and arr[i][j]==1 :
#                 w=w+1
#     print(w)
#

# n=int(input())
# arr=list(map(int, input().split()))
# number=0    # 1
# card=0      # 사이
#
# for i in range(0,n*2-1) :
#     if arr[i] == 1 :
#         number = number + 1
#         if number == 2 :
#             break
#     elif arr[i] != 1 :
#         if number == 1 :
#             card=card+1
#         elif number == 0 :
#             continue
#
#
#
# print(card)
'''
4
1 3 4 2 1 2 3 7
'''




w=1
plus=0
n=int(input())
arr=[[0 for i in range(n)] for j in range(n)]
for i in range(0,n) :
    for j in range(0,n) :
        arr[i][j]=w
        w=w+1
for i in range(0,n) :
    for j in range(0,n) :
        if i==0 or j==0 :
            plus=plus + arr[i][j]
            print(arr[i][j])
        elif i==n-1 or j==n-1 :
            plus=plus + arr[i][j]
            print(arr[i][j])
print(plus)