import numpy as np

a = np.zeros((5, 5))

count = 1
for i in range(5):
    for j in range(5):
        a[i][j] = count
        count += 1
print(a)
print()

indices = np.nonzero((a % 3 == 0) & (a % 5 != 0))

print(a[indices])


print("\nAlso Desired:")
print("[ 4. 7. 13. 19. 21. 25.]")
print("Using a[indices] of some form")