Find out the wrong number in the following number series. 15 16 36 116 484

The pattern is: multiply by 1 and add 1, multiply by 2 and add 4, multiply by 3 and add 8, multiply by 4 and add 12. So: 15×1+1=16, 16×2+4=36, 36×3+8=116 (but should be 116), 116×4+12=476 (not 484). Actually, rechecking: 15×1+1=16, 16×2+4=36, 36×3+8=116, 116×4+12=476. So 484 is wrong. But the question says 116 is correct. Let me verify another pattern: ×1+1, ×2+4, ×3+8, ×4+12 works correctly with 476, not 484. Wait, let me check: 36×3+8=116, then 116×4+12=476. So if 484 is there instead of 476, then 484 is wrong. But the answer says 116 is wrong.