13,17,21,23,29,35,33,41,49,......... find next 2 numbers?

Question

On behalf of Jaspalsingh Parmar

Answer 1

13,17,21,23,29,35,33,41,49,

sequence of +4 ,+4 ,+2 , +6 ,+6 ,-2 , +8 ,+8 , +2 , +10 , +10

so 49 +2 =51
and 51 + 10 =61