Help: How to calculate quickly this sum 192,255,317....1218,1262?

I have to calculate hundreds of sums similar to the one below, with
100's + of numbers per series.

How do I calculate this sum?( using multiplication or factorial etc..)

192,255,317,378,438,497,555,612,668,723,777,830,882,
933,983,1032,1080,1127,1173,1218, 1262

This series of number follow this rule
192 -> 255 = 63
255 -> 317 = 62
317 ->378 = 61
378 ->438 = 60
....
...
1173 ->1218 =45
1218 -> 1262 = 44

What is the name of such a series?

Any chance to explain how you calculate the sum?

Reference websites would be appreciated?

gnh888

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