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What is next in the sequence 4 comma 15 comma 59 comma 235?In: Math, Arithmetic
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hmm
4*4 -1 =15
4*15 -1 = 59
4*59 -1 =235
4*235 -1 = 939
First answer by Daviduk99. Last edit by Daviduk99. Contributor trust: 38 [recommend contributor]. Question popularity: 1 [recommend question]



