Your code will check whether the last triplets in num1 exist in num2, not all the triplets in num1. A slight modification in code blocks should fix it.

which takes numbers num1 and num2 and returns 1 if there is a straight triple of a number at any place in num1 and also a straight double of the same number in num2.

Only triples on num1 and doubles on num2 of the same number. If that's not what you were asking, rephrase the question.

May it be double of triples in num 1?