import numpy as np
A = np.zeros (2*6).reshape(2, 6)
for i in range(2):
for j in range(6):
if i%2 == 0:
A[i][j] = i**2 + j
else:
A[i][j] = i-j**2
print A
import numpy as np
rows = 2
columns = 6
A = np.zeros(rows*columns, dtype = int).reshape(rows, columns)
for i in range(1, rows + 1):
for j in range(1, columns + 1):
A[i-1][j-1] = i-j*j if 1 == (1 & i) else i*i-j