index_max = [5, 5, 5, 5, 6, 7, 14, 15, 16, 16, 16, 16, 18, 18, 32, 32, 34, 34, 34, 34, 35, 38, 42, 42, 42, 42, 45]
pattern_width = 4
final_list = []

for i in range(len(index_max) - pattern_width):
	temp = index_max[i:i + pattern_width]
	s = set(temp)
	if len(s) == 1:
		final_list.append(temp[0])

print(final_list)