Sequence 0, 10, 24, 56,  112, 190, ...



first differences:  10  14  32   56   78

2nd differences:      4   18   24   22

3rd differences:        14   6    -2

4th differences:          -8   -8   



So the next 3rd diff is    -2-8 = -10

The next 2nd diff is      22-10 = 12

The next first difference 78+12 = 90

The next number in sequence is  190 + 90 = 280 

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