Find The Next Number In The Sequence 30; 10; 15; 13; 0; 16; -15; ?

Question

What number comes next in this sequence: 1 4 8 13 21 30 36 ??

Answer 1

30,10,15,13, 0, 16, -15, -621
-20, 5, -2, -13, 16, -31, -606
25, -7, -11, 29, -47, -575
-32, -4, 40, -76, -528
28, 44, -116, -452
16, -160, -336
-176, -176