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This sequence appears to actually have 2 'formulas'

if n is even .... 4, 7, 10, etc. is an arithmetic sequence with d = 3
k = 1 + 3n/2

if n is odd .... 3, 6, 9, etc. it is different arith. seq with d also = 3
k = (3/2)(n+1)
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11y ago
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Q: What is a formula to solve 3 4 6 7 9 10 12 13 15 16?
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