Please improve my code for the following output. I want a better time complexity and space complexity.

Question

Q. Write a program which gives the given output (7 rows) pattern for the corresponding integer input.

input = 4

output:-

4
8 9
12 14 16
16 17 18 19
36 38 40 42 44 46
32 33 34 35 36 37 38 39
108 110 112 114 116 118 120 122 124

My code:(Python)

a=int(input("enter: "))
d=a
rows=7
k=0
l=1
print(a)
for i in range(rows-1):
if (i%2!=0):
a=a*3
k+=3
for j in range(k):
print(a+(2*j), end=" ")
print()

else:
d*=2
l*=2
for j in range(l):
print(d+j, end=" ")
print()

Answer 1

U forgot to say what yrs program should to do

Answer 2

The program is supposed to give that pattern of numbers as output in 7 rows for a given integer input.
This question was asked in a test and my answer was this python code. As one can see I have used 7 variables. I just want to know an alternate code which gives the same output with better logic and improved time complexity.

Answer 3

Prasenjit Kumar
Sry, but i have no idea whats it, and it seems to me that yr code is pretty fast and simple