Find the missing Item in the sequence

Question

There is a sequence described below.What is the missing item?

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$5,10,?,50,122,...$

Answer 1

$2^2+1,3^2+1 , .., 7^2+1, 11^2+1$, seems like series of primes to me so I would guess 26

Answer 2

It must be zero, and the sequence is, of course, $$5,10,0,50,122,0,5,10,0,50,122,0,5,10,0,\dots$$